feat(flow) drop Flow integration

We are not actually using it here.

.eslintignore

 # Third-party source code which we (1) do not want to modify or (2) try to
 # modify as little as possible.
 doc/example/libs/*
-flow-typed/*
 
 # ESLint will by default ignore its own configuration file. However, there does
 # not seem to be a reason why we will want to risk being inconsistent with our

.flowconfig

-; XXX The origin of the source code of this .flowconfig file is the jitsi-meet
-; project. As the NPM package jitsi-meet builds the NPM package lib-jitsi-meet
-; and jitsi-meet's react-native requires specific .flowconfig contents, it is
-; mandatory to keep the .flowconfig files of jitsi-meet and lib-jitsi-meet in
-; sync (e.g. the flow-bin version).
-;
-[ignore]
-.*/\.git/.*
-
-[include]
-
-[libs]
-
-[options]
-emoji=true
-
-module.system=haste
-
-munge_underscores=true
-
-module.name_mapper='^[./a-zA-Z0-9$_-]+\.\(bmp\|gif\|jpg\|jpeg\|png\|psd\|svg\|webp\|m4v\|mov\|mp4\|mpeg\|mpg\|webm\|aac\|aiff\|caf\|m4a\|mp3\|wav\|html\|pdf\)$' -> 'RelativeImageStub'
-
-suppress_type=$FlowIssue
-suppress_type=$FlowFixMe
-
-suppress_comment=\\(.\\|\n\\)*\\$FlowFixMe\\($\\|[^(]\\|(\\(<VERSION>\\)? *\\(site=[a-z,_]*react_native\\(_ios\\)?_\\(oss\\|fb\\)[a-z,_]*\\)?)\\)
-suppress_comment=\\(.\\|\n\\)*\\$FlowIssue\\((\\(<VERSION>\\)? *\\(site=[a-z,_]*react_native\\(_ios\\)?_\\(oss\\|fb\\)[a-z,_]*\\)?)\\)?:? #[0-9]+
-
-suppress_comment=\\(.\\|\n\\)*\\$FlowExpectedError
-
-[version]
-^0.104.0

flow-typed/npm/flow-bin_v0.x.x.js

-// flow-typed signature: 6a5610678d4b01e13bbfbbc62bdaf583
-// flow-typed version: 3817bc6980/flow-bin_v0.x.x/flow_>=v0.25.x
-
-declare module "flow-bin" {
-  declare module.exports: string;
-}

package-lock.json

         "@babel/helper-plugin-utils": "^7.0.0"
       }
     },
-    "@babel/plugin-syntax-flow": {
-      "version": "7.0.0",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-syntax-flow/-/plugin-syntax-flow-7.0.0.tgz",
-      "integrity": "sha512-zGcuZWiWWDa5qTZ6iAnpG0fnX/GOu49pGR5PFvkQ9GmKNaSphXQnlNXh/LG20sqWtNrx/eB6krzfEzcwvUyeFA==",
-      "dev": true,
-      "requires": {
-        "@babel/helper-plugin-utils": "^7.0.0"
-      }
-    },
     "@babel/plugin-syntax-json-strings": {
       "version": "7.0.0",
       "resolved": "https://registry.npmjs.org/@babel/plugin-syntax-json-strings/-/plugin-syntax-json-strings-7.0.0.tgz",
         "@babel/helper-plugin-utils": "^7.0.0"
       }
     },
-    "@babel/plugin-transform-flow-strip-types": {
-      "version": "7.0.0",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-flow-strip-types/-/plugin-transform-flow-strip-types-7.0.0.tgz",
-      "integrity": "sha512-WhXUNb4It5a19RsgKKbQPrjmy4yWOY1KynpEbNw7bnd1QTcrT/EIl3MJvnGgpgvrKyKbqX7nUNOJfkpLOnoDKA==",
-      "dev": true,
-      "requires": {
-        "@babel/helper-plugin-utils": "^7.0.0",
-        "@babel/plugin-syntax-flow": "^7.0.0"
-      }
-    },
     "@babel/plugin-transform-for-of": {
       "version": "7.0.0",
       "resolved": "https://registry.npmjs.org/@babel/plugin-transform-for-of/-/plugin-transform-for-of-7.0.0.tgz",
         }
       }
     },
-    "@babel/preset-flow": {
-      "version": "7.0.0",
-      "resolved": "https://registry.npmjs.org/@babel/preset-flow/-/preset-flow-7.0.0.tgz",
-      "integrity": "sha512-bJOHrYOPqJZCkPVbG1Lot2r5OSsB+iUOaxiHdlOeB1yPWS6evswVHwvkDLZ54WTaTRIk89ds0iHmGZSnxlPejQ==",
-      "dev": true,
-      "requires": {
-        "@babel/helper-plugin-utils": "^7.0.0",
-        "@babel/plugin-transform-flow-strip-types": "^7.0.0"
-      }
-    },
     "@babel/template": {
       "version": "7.1.2",
       "resolved": "https://registry.npmjs.org/@babel/template/-/template-7.1.2.tgz",
       }
     },
     "eslint-config-jitsi": {
-      "version": "github:jitsi/eslint-config-jitsi#f292fbc07689eb3dbeb81c074accff25b448b074",
-      "from": "github:jitsi/eslint-config-jitsi#1.0.3",
+      "version": "github:jitsi/eslint-config-jitsi#974ab743dde38bf2207ad4ea5e4e89cfb98517b1",
+      "from": "github:jitsi/eslint-config-jitsi#974ab743dde38bf2207ad4ea5e4e89cfb98517b1",
       "dev": true
     },
     "eslint-import-resolver-node": {
         "pkg-dir": "^2.0.0"
       }
     },
-    "eslint-plugin-flowtype": {
-      "version": "2.50.3",
-      "resolved": "https://registry.npmjs.org/eslint-plugin-flowtype/-/eslint-plugin-flowtype-2.50.3.tgz",
-      "integrity": "sha512-X+AoKVOr7Re0ko/yEXyM5SSZ0tazc6ffdIOocp2fFUlWoDt7DV0Bz99mngOkAFLOAWjqRA5jPwqUCbrx13XoxQ==",
-      "dev": true,
-      "requires": {
-        "lodash": "^4.17.10"
-      }
-    },
     "eslint-plugin-import": {
       "version": "2.20.2",
       "resolved": "https://registry.npmjs.org/eslint-plugin-import/-/eslint-plugin-import-2.20.2.tgz",
       "integrity": "sha512-r5wGx7YeOwNWNlCA0wQ86zKyDLMQr+/RB8xy74M4hTphfmjlijTSSXGuH8rnvKZnfT9i+75zmd8jcKdMR4O6jA==",
       "dev": true
     },
-    "flow-bin": {
-      "version": "0.104.0",
-      "resolved": "https://registry.npmjs.org/flow-bin/-/flow-bin-0.104.0.tgz",
-      "integrity": "sha512-EZXRRmf7m7ET5Lcnwm/I/T8G3d427Bq34vmO3qIlRcPIYloGuVoqRCwjaeezLRDntHkdciagAKbhJ+NTbDjnkw==",
-      "dev": true
-    },
     "flush-write-stream": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/flush-write-stream/-/flush-write-stream-1.1.1.tgz",

package.json

     "@babel/plugin-proposal-export-namespace-from": "7.0.0",
     "@babel/plugin-proposal-nullish-coalescing-operator": "7.13.8",
     "@babel/plugin-proposal-optional-chaining": "7.2.0",
-    "@babel/plugin-transform-flow-strip-types": "7.0.0",
     "@babel/preset-env": "7.1.0",
-    "@babel/preset-flow": "7.0.0",
     "babel-eslint": "10.0.1",
     "babel-loader": "8.0.4",
     "core-js": "2.5.1",
     "eslint": "5.6.1",
-    "eslint-config-jitsi": "github:jitsi/eslint-config-jitsi#1.0.3",
-    "eslint-plugin-flowtype": "2.50.3",
+    "eslint-config-jitsi": "github:jitsi/eslint-config-jitsi#974ab743dde38bf2207ad4ea5e4e89cfb98517b1",
     "eslint-plugin-import": "2.20.2",
-    "flow-bin": "0.104.0",
     "jasmine-core": "3.5.0",
     "karma": "5.1.1",
     "karma-chrome-launcher": "3.1.0",
     "webpack-cli": "3.3.11"
   },
   "scripts": {
-    "lint": "eslint . && flow",
+    "lint": "eslint .",
     "postinstall": "webpack -p",
     "test": "karma start karma.conf.js",
     "test-watch": "karma start karma.conf.js --no-single-run",

webpack-shared-config.js

                                 safari: 11
                             }
                         }
-                    ],
-                    '@babel/preset-flow'
+                    ]
                 ],
                 plugins: [
-                    '@babel/plugin-transform-flow-strip-types',
                     '@babel/plugin-proposal-class-properties',
                     '@babel/plugin-proposal-optional-chaining',
                     '@babel/plugin-proposal-export-namespace-from',