d3d11: Get rid of the DXBC tag definitions.

dlls/d3d11/d3d11_private.h

@@ -38,18 +38,6 @@
 #include "wine/winedxgi.h"
 #include "wine/rbtree.h"
 
-#define MAKE_TAG(ch0, ch1, ch2, ch3) \
-    ((DWORD)(ch0) | ((DWORD)(ch1) << 8) | \
-    ((DWORD)(ch2) << 16) | ((DWORD)(ch3) << 24 ))
-#define TAG_AON9 MAKE_TAG('A', 'o', 'n', '9')
-#define TAG_DXBC MAKE_TAG('D', 'X', 'B', 'C')
-#define TAG_ISGN MAKE_TAG('I', 'S', 'G', 'N')
-#define TAG_OSG5 MAKE_TAG('O', 'S', 'G', '5')
-#define TAG_OSGN MAKE_TAG('O', 'S', 'G', 'N')
-#define TAG_PCSG MAKE_TAG('P', 'C', 'S', 'G')
-#define TAG_SHDR MAKE_TAG('S', 'H', 'D', 'R')
-#define TAG_SHEX MAKE_TAG('S', 'H', 'E', 'X')
-
 struct d3d_device;
 
 /* TRACE helper functions */