Revert "misc: disable hardware acceleration by default at running"

This reverts commit fd9c2e28.

Change-Id: I94fed8863d6d139a92d579f65d4a6884bc8ca7d7

src/mainapplication.cpp

@@ -201,7 +201,6 @@ MainApplication::initLrc()
     splash_->hide();
     LRCInstance::subscribeToDebugReceived();
     LRCInstance::getAPI().holdConferences = false;
-    LRCInstance::avModel().setHardwareAcceleration(false);
 }
 
 void