base/util: don't use the Grand Unified Logger

There are just a couple of logs in this feature, and it's included in bundles
like external_api, which would bloat it due to cascaded dependencis.

react/features/base/util/helpers.js

 // @flow
 
-import logger from './logger';
-
 /**
  * Creates a deferred object.
  *
  * @returns {void}
  */
 export function reportError(e: Object, msg: string = '') {
-    logger.error(msg, e);
+    console.error(msg, e);
     window.onerror && window.onerror(msg, null, null, null, e);
 }

react/features/base/util/httpUtils.js

 import { timeoutPromise } from './timeoutPromise';
 
-import logger from './logger';
-
 /**
  * The number of milliseconds before deciding that we need retry a fetch request.
  *
 
             return jsonify
                 .then(result => Promise.reject(result));
-        })
-        .catch(error => {
-            logger.error('Error performing get:', url, error);
-
-            return Promise.reject(error);
         });
 
     if (retry) {

react/features/base/util/logger.js

-// @flow
-
-import { getLogger } from '../logging/functions';
-
-export default getLogger('features/base/util');

react/features/base/util/uri.js

 // @flow
 
-import logger from './logger';
-
 /**
  * The app linking scheme.
  * TODO: This should be read from the manifest files later.
             params.push(
                 `${key}=${encodeURIComponent(JSON.stringify(obj[key]))}`);
         } catch (e) {
-            logger.warn(`Error encoding ${key}: ${e}`);
+            console.warn(`Error encoding ${key}: ${e}`);
         }
     }