Move dex CFG dumping out of utils.cc

Move CFG dumping to dexdump, the only client.

Bug: 22322814
Test: test-art-host
Change-Id: I0f39f1d5dfc446419d26d709b78d04e45616f42c
diff --git a/dexdump/dexdump.cc b/dexdump/dexdump.cc
index b241c8b..15b6e17 100644
--- a/dexdump/dexdump.cc
+++ b/dexdump/dexdump.cc
@@ -43,9 +43,9 @@
 #include <vector>
 
 #include "base/stringprintf.h"
+#include "dexdump_cfg.h"
 #include "dex_file-inl.h"
 #include "dex_instruction-inl.h"
-#include "utils.h"
 
 namespace art {
 
@@ -1358,7 +1358,7 @@
   if (code_item != nullptr) {
     std::ostringstream oss;
     DumpMethodCFG(dex_file, dex_method_idx, oss);
-    fprintf(gOutFile, "%s", oss.str().c_str());
+    fputs(oss.str().c_str(), gOutFile);
   }
 }