drm/ttm: remove TTM_PAGE_FLAG_NO_RETRY

No longer used it seems.
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Cc: Christian König <christian.koenig@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210927114114.152310-4-matthew.auld@intel.comSigned-off-by: Christian König <christian.koenig@amd.com>

include/drm/ttm/ttm_tt.h

@@ -41,7 +41,6 @@ struct ttm_operation_ctx;
 #define TTM_PAGE_FLAG_SWAPPED         (1 << 4)
 #define TTM_PAGE_FLAG_ZERO_ALLOC      (1 << 6)
 #define TTM_PAGE_FLAG_SG              (1 << 8)
-#define TTM_PAGE_FLAG_NO_RETRY	      (1 << 9)
 
 #define TTM_PAGE_FLAG_PRIV_POPULATED  (1 << 31)