Rename a file with tests for for_! macro

Author: sanchopanca

tests/test_macros.rs tests/test_for.rstests/test_macros.rs renamed to tests/test_for.rs

@@ -11,10 +11,6 @@ fn test_if_block() {
         flag = false;
     }}
 
-    // else_! {
-    //     flag = false;
-    // }
-
     assert!(flag);
 }