cmd/gc: delete dead code

R=ken2
CC=golang-dev
https://golang.org/cl/6307050

src/cmd/gc/dcl.c

@@ -432,21 +432,6 @@ oldname(Sym *s)
 	return n;
 }
 
-/*
- * same for types
- */
-Type*
-newtype(Sym *s)
-{
-	Type *t;
-
-	t = typ(TFORW);
-	t->sym = s;
-	t->type = T;
-	return t;
-}
-
-
 /*
  * := declarations
  */
@@ -1311,7 +1296,7 @@ addmethod(Sym *sf, Type *t, int local)
 		}
 		// Should have picked off all the reasons above,
 		// but just in case, fall back to generic error.
-		yyerror("invalid receiver type %T", pa);
+		yyerror("invalid receiver type %T (%lT / %lT)", pa, pa, t);
 		return;
 	}
 

src/cmd/gc/go.h

@@ -942,7 +942,6 @@ Node*	methodname(Node *n, Type *t);
 Node*	methodname1(Node *n, Node *t);
 Sym*	methodsym(Sym *nsym, Type *t0, int iface);
 Node*	newname(Sym *s);
-Type*	newtype(Sym *s);
 Node*	oldname(Sym *s);
 void	popdcl(void);
 void	poptodcl(void);