feat: Remove the min-participants config.

config.js

     // TCC sequence numbers starting from 0.
     // enableIceRestart: false,
 
-    // Defines the minimum number of participants to start a call (the default
-    // is set in Jicofo and set to 2).
-    // minParticipants: 2,
-
     // Use TURN/UDP servers for the jitsi-videobridge connection (by default
     // we filter out TURN/UDP because it is usually not needed since the
     // bridge itself is reachable via UDP)

react/features/base/config/configWhitelist.js

     'liveStreamingEnabled',
     'localRecording',
     'maxFullResolutionParticipants',
-    'minParticipants',
     'openBridgeChannel',
     'opusMaxAverageBitrate',
     'p2p',