Revert "IMS: Fix issue with answering call for some 3rd party apps"

This reverts commit 9fa9ac0.

Author: Genkzsz11

telecomm/java/android/telecom/ConnectionService.java

@@ -2106,8 +2106,7 @@ private void abort(String callId) {
         findConnectionForAction(callId, "abort").onAbort();
     }
 
-    /** {@hide} */
-    protected void answerVideo(String callId, int videoState) {
+    private void answerVideo(String callId, int videoState) {
         Log.i(this, "answerVideo %s", callId);
         if (mConnectionById.containsKey(callId)) {
             findConnectionForAction(callId, "answer").onAnswer(videoState);
@@ -2116,8 +2115,7 @@ protected void answerVideo(String callId, int videoState) {
         }
     }
 
-    /** {@hide} */
-    protected void answer(String callId) {
+    private void answer(String callId) {
         Log.i(this, "answer %s", callId);
         if (mConnectionById.containsKey(callId)) {
             findConnectionForAction(callId, "answer").onAnswer();