libva: remove special patch used for vpp

packages/multimedia/libva/patches/libva-patch-surface_empty.patch

@@ -1,23 +0,0 @@
-diff --git a/va/va.h b/va/va.h
-index d9e4c7e..dc0f092 100644
---- a/va/va.h
-+++ b/va/va.h
-@@ -1905,6 +1905,8 @@ VAStatus vaSyncSurface (
-     VASurfaceID render_target
- );
- 
-+#define HAVE_VA_SURFACE_STATUS_EMPTY 1
-+
- typedef enum
- {
-     VASurfaceRendering	= 1, /* Rendering in progress */ 
-@@ -1912,7 +1914,8 @@ typedef enum
-                              /* this status is useful if surface is used as the source */
-                              /* of an overlay */
-     VASurfaceReady	= 4, /* not being rendered or displayed */
--    VASurfaceSkipped	= 8  /* Indicate a skipped frame during encode */
-+    VASurfaceSkipped	= 8, /* Indicate a skipped frame during encode */
-+    VASurfaceEmpty	= 16 /* contains no actual data */
- } VASurfaceStatus;
- 
- /*