[vaapi] Remove superfluous logic from ffmpeg postproc

COutput::InitCycle is making sure that settings are observed. There is
nothing to do in this function actually as a change of the deinterlace
method currently requires a reinitialization of CFFmpegPostproc.

xbmc/cores/VideoPlayer/DVDCodecs/Video/VAAPI.cpp

@@ -3152,18 +3152,7 @@ void CFFmpegPostproc::Flush()
 
 bool CFFmpegPostproc::UpdateDeintMethod(EINTERLACEMETHOD method)
 {
-  // switching between certain methods should be done without deinit/init
-  if (method != m_diMethod)
-    return false;
-
-  if (method == VS_INTERLACEMETHOD_DEINTERLACE)
-    return true;
-  else if (method == VS_INTERLACEMETHOD_RENDER_BOB)
-    return true;
-  else if (method == VS_INTERLACEMETHOD_NONE &&
-           !CServiceBroker::GetSettingsComponent()->GetSettings()->GetBool(SETTING_VIDEOPLAYER_PREFERVAAPIRENDER))
-    return true;
-
+  /// \todo switching between certain methods could be done without deinit/init
   return false;
 }