i965: Don't print WE_normal in disassembly.

Dropping this helps most lines fit in an 80 column terminal.  The
absence of WE_normal also helps call attention to WE_all, where
something unusual is going on.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>

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

@@ -213,7 +213,7 @@ static const char *const accwr[2] = {
 };
 
 static const char *const wectrl[2] = {
-   [0] = "WE_normal",
+   [0] = "",
    [1] = "WE_all"
 };