Removed also the production declaration -> rule_specific_token.

src/fancy-parser.mly

@@ -96,17 +96,6 @@ declaration:
 | PARAMETER t = OCAMLTYPE
     { [ with_poss $startpos $endpos (DParameter t) ] }
 
-/* This production recognizes tokens that are valid in the rules section,
-   but not in the declarations section. This is a hint that a %% was
-   forgotten. */
-
-| rule_specific_token
-    {
-      Error.error (Positions.two $startpos $endpos)
-        "syntax error inside a declaration.\n\
-         Did you perhaps forget the %% that separates declarations and rules?"
-    }
-
 priority_keyword:
   LEFT
     { LeftAssoc }
@@ -115,13 +104,6 @@ priority_keyword:
 | NONASSOC
     { NonAssoc }
 
-rule_specific_token:
-| PUBLIC
-| INLINE
-| COLON
-| EOF
-    { () }
-
 /* ------------------------------------------------------------------------- */
 /* Our lists of symbols are separated with optional commas. Order is
    irrelevant. */