avmedia: MSVC: pragma warning: make more specific, remove obsolete

Change-Id: I6274d563f9bb4f1f173d0d5d25239e5617ee064c
Reviewed-on: https://gerrit.libreoffice.org/48946
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>

avmedia/source/win/framegrabber.cxx

@@ -21,10 +21,6 @@
 
 #include <memory>
 
-#if defined _MSC_VER
-#pragma warning(push, 1)
-#pragma warning(disable: 4917)
-#endif
 #include <prewin.h>
 #include <postwin.h>
 #include <objbase.h>
@@ -32,9 +28,6 @@
 #include <Amvideo.h>
 #include "interface.hxx"
 #include <uuids.h>
-#if defined _MSC_VER
-#pragma warning(pop)
-#endif
 
 #include "framegrabber.hxx"
 #include "player.hxx"

avmedia/source/win/player.cxx

@@ -17,18 +17,11 @@
  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  */
 
-#if defined _MSC_VER
-#pragma warning(push, 1)
-#pragma warning(disable: 4917)
-#endif
 #include <objbase.h>
 #include <strmif.h>
 #include <control.h>
 #include <uuids.h>
 #include <evcode.h>
-#if defined _MSC_VER
-#pragma warning(pop)
-#endif
 
 #include "player.hxx"
 #include "framegrabber.hxx"

avmedia/source/win/window.cxx

@@ -17,17 +17,11 @@
  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  */
 
-#if defined _MSC_VER
-#pragma warning(push, 1)
-#pragma warning(disable: 4917)
-#endif
 #include <objbase.h>
 #include <strmif.h>
 #include <control.h>
 #include <dshow.h>
-#if defined _MSC_VER
-#pragma warning(pop)
-#endif
+
 #include <com/sun/star/awt/SystemPointer.hpp>
 #include <cppuhelper/supportsservice.hxx>