revert destructive changes.

Author: cloudwebrtc

lib/src/media_recorder.dart

@@ -20,5 +20,5 @@ abstract class MediaRecorder {
     int timeSlice = 1000,
   });
 
-  Future<dynamic> stop({String? albumName});
+  Future<dynamic> stop();
 }

lib/src/rtc_video_renderer.dart

@@ -41,8 +41,6 @@ class RTCVideoValue {
 }
 
 abstract class VideoRenderer {
-  VideoRenderer();
-
   /// When the video size changes, or the native texture
   /// changes (angle or size), notify the user to redraw the Widget.
   Function? onResize;
@@ -54,8 +52,6 @@ abstract class VideoRenderer {
 
   int get videoHeight;
 
-  RTCVideoValue get videoValue => RTCVideoValue();
-
   bool get muted;
   set muted(bool mute);