ref(SDPUtils) Remove unused functions

modules/sdp/SdpTransformUtil.js

                 && parsePrimarySSRC(group) === primarySSRC);
     }
 
-    /**
-     * @param {string|null} msid the media stream id or <tt>null</tt> to match
-     * the first SSRC object with any 'msid' value.
-     * @return {Object|undefined} the SSRC object as defined by 'sdp-transform'
-     * lib.
-     */
-    findSSRCByMSID(msid) {
-        return this.ssrcs.find(
-            ssrcObj => ssrcObj.attribute === 'msid'
-                && (msid === null || ssrcObj.value === msid));
-    }
-
     /**
      * Gets the SSRC count for the underlying media description.
      * @return {number}
         return videoSSRCs;
     }
 
-    /**
-     * Dumps all SSRC groups of this media description to JSON.
-     */
-    dumpSSRCGroups() {
-        return JSON.stringify(this.mLine.ssrcGroups);
-    }
-
     /**
      * Removes all SSRC groups which contain given SSRC number at any position.
      * @param {number} ssrc the SSRC for which all matching groups are to be
                 .filter(groupInfo => groupInfo.semantics !== semantics);
     }
 
-    /**
-     * Replaces SSRC (does not affect SSRC groups, but only attributes).
-     * @param {number} oldSSRC the old SSRC number
-     * @param {number} newSSRC the new SSRC number
-     */
-    replaceSSRC(oldSSRC, newSSRC) {
-        if (this.mLine.ssrcs) {
-            this.mLine.ssrcs.forEach(ssrcInfo => {
-                if (ssrcInfo.id === oldSSRC) {
-                    ssrcInfo.id = newSSRC;
-                }
-            });
-        }
-    }
-
     /**
      * Adds given SSRC group to this media description.
      * @param {object} group the SSRC group object as defined by

types/hand-crafted/modules/sdp/SdpTransformUtil.d.ts

   findGroup: ( semantics: string, ssrcs: string ) => unknown | undefined;
   findGroups: ( semantics: string ) => unknown[];
   findGroupByPrimarySSRC: ( semantics: string, primarySSRC: number ) => unknown; // TODO:
-  findSSRCByMSID: ( msid: string | null ) => unknown | undefined; // TODO:
   getSSRCCount: () => number;
   containsAnySSRCGroups: () => boolean;
   getPrimaryVideoSsrc: () => number | undefined;
   getRtxSSRC: ( primarySsrc: number ) => number | undefined;
   getSSRCs: () => number[];
   getPrimaryVideoSSRCs: () => number[];
-  dumpSSRCGroups: () => string;
   removeGroupsWithSSRC: ( ssrc: string ) => void;
   removeGroupsBySemantics: ( semantics: string ) => void;
-  replaceSSRC: ( oldSSRC: number, newSSRC: number ) => void;
   addSSRCGroup: ( group: unknown ) => void; // TODO:
 }