Merge pull request #5731 from jsquyres/pr/fix-c11-atomic-configury

opal_config_asm.m4: fix typo in new C11 atomic code

config/opal_config_asm.m4

@@ -165,7 +165,6 @@ static void test2(void)
     }
 }
 
-vvvvvvvvvvvvvvvvvvvv
 int main(int argc, char** argv)
 {
     test1();