Quieten debug message.

src/mesa/drivers/dri/i965/brw_wm_fp.c

@@ -60,9 +60,11 @@ static const char *wm_opcode_strings[] = {
    "FB_WRITE"
 };
 
+#if 0
 static const char *wm_file_strings[] = {   
    "PAYLOAD"
 };
+#endif
 
 
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