irgopt: Remove local_opts().

It just calls optimize_graph_df().
Its documentation was that of optimize_graph_df() anyway.

include/libfirm/irgopt.h

@@ -51,21 +51,14 @@ FIRM_API void local_optimize_graph(ir_graph *irg);
  * This version uses fixpoint iteration.
  *
  * @param irg  The graph to be optimized.
- *
- * @return non-zero if the optimization could be applied, 0 else
  */
-FIRM_API void local_opts(ir_graph *irg);
+FIRM_API void optimize_graph_df(ir_graph *irg);
 
 /**
  * Perform local optimizations on nodes on const code irg
  */
 FIRM_API void local_opts_const_code(void);
 
-/** Same functionality as local_opts above, but without framework wrapper
- * @deprecated
- */
-FIRM_API void optimize_graph_df(ir_graph *irg);
-
 /**
  * Eliminates (obviously) unreachable code
  */

ir/Makefile.am

@@ -199,7 +199,6 @@ libfirm_la_SOURCES = \
 	opt/ircgopt.c \
 	opt/jumpthreading.c \
 	opt/ldstopt.c \
-	opt/local.c \
 	opt/loop.c \
 	opt/opt_blocks.c \
 	opt/opt_confirms.c \

ir/opt/local.c

-/*
- * This file is part of libFirm.
- * Copyright (C) 2012 Karlsruhe Institute of Technology.
- */
-
-/**
- * @brief   Apply local opts until fixpoint
- * @author  Andreas Zwinkau
- */
-#include "irgopt.h"
-
-void local_opts(ir_graph *irg)
-{
-	optimize_graph_df(irg);
-}