removed local function unsafe grammar extension

RexJaeschke · web-flow · commit c86c9b0f4645 · 2021-04-19T11:24:00.000-04:00
With the consolidation of the unsafe grammar in PR #233, this text is no longer needed.
diff --git a/standard/unsafe-code.md b/standard/unsafe-code.md
@@ -104,11 +104,6 @@ embedded_statement
 unsafe_statement
     : 'unsafe' block
     ;
-    
-local_function_modifiers
-    : ...
-    | 'unsafe'
-    ;
 ```
 
 > *Example*: In the following code
