Clean up tests to stop people copy and pasting the wrong examples

test/handler/test_asm_handler.vader

@@ -1,6 +1,11 @@
-Execute(The asm GCC handler should parse lines from GCC 6.3.1 correctly):
+Before:
   runtime ale_linters/asm/gcc.vim
 
+After:
+  call ale#linter#Reset()
+
+Execute(The asm GCC handler should parse lines from GCC 6.3.1 correctly):
+
   AssertEqual
   \ [
   \    {
@@ -19,6 +24,3 @@ Execute(The asm GCC handler should parse lines from GCC 6.3.1 correctly):
   \   "{standard_input}:38: Error: too many memory references for `mov'",
   \   "{standard input}:42: Error: incorrect register `%ax' used with `l' suffix",
   \ ])
-
-After:
-  call ale#linter#Reset()