remove obsolete APIs

Change-Id: Ic83e090c19f3c5c7dc0c5d950ccb57411f217294

src/qtwrapper/callmanager_wrap.h

@@ -290,12 +290,6 @@ public Q_SLOTS: // METHODS
         return temp;
     }
 
-    QStringList getDisplayNames(const QString& confID)
-    {
-        QStringList temp = convertStringList(DRing::getDisplayNames(confID.toStdString()));
-        return temp;
-    }
-
     bool getIsRecording(const QString& callID)
     {
         // TODO: match API

src/qtwrapper/videomanager_wrap.h

@@ -153,15 +153,6 @@ public Q_SLOTS: // METHODS
         return temp;
     }
 
-    bool hasCameraStarted()
-    {
-#ifdef ENABLE_VIDEO
-        return DRing::hasCameraStarted();
-#else
-        return false;
-#endif
-    }
-
     void setDefaultDevice(const QString& name)
     {
 #ifdef ENABLE_VIDEO