glapi: Harden GLX request size processing (v2)

v2: Use == not is for equality testing (Dylan Baker)

Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Adam Jackson <ajax@redhat.com>

src/mapi/glapi/gen/glX_proto_send.py

@@ -176,8 +176,6 @@ class PrintGlxProtoStubs(glX_proto_common.glx_print_proto):
         print '#include <xcb/glx.h>'
         print '#include <limits.h>'
 
-        print ''
-        print '#define __GLX_PAD(n) (((n) + 3) & ~3)'
         print ''
         self.printFastcall()
         self.printNoinline()