c-family: remove dead #undef

The #undef was added in r0-90320-g100d537d7a7b5c but it never did
anything.

gcc/c-family/ChangeLog:

	* c-warn.cc (warn_about_parentheses): Remove an #undef.

diff --git a/gcc/c-family/c-warn.cc b/gcc/c-family/c-warn.cc
index 8168696fa45dd03baa88b3954091544f00c08792..bff87be05ae3abaddd0f32d3c08b9da4e4801c64 100644 (file)
--- a/gcc/c-family/c-warn.cc
+++ b/gcc/c-family/c-warn.cc
@@ -2176,7 +2176,6 @@ warn_about_parentheses (location_t loc, enum tree_code code,
        }
       return;
     }
-#undef NOT_A_BOOLEAN_EXPR_P
 }
 
 /* If LABEL (a LABEL_DECL) has not been used, issue a warning.  */