Remove output from gen-snapshot.

runtime/bin/gen_snapshot.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 // Generate a snapshot file after loading all the scripts specified on the
 // command line.
 
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ skipping 136 matching lines @@
   Dart_Handle result = Dart_Null();
   Dart_Handle handle = Dart_StringToUTF8(name, &utf8_array, &utf8_len);
   if (Dart_IsError(handle)) {
     handle = Dart_ThrowException(
         DartUtils::NewDartArgumentError(Dart_GetError(handle)));
   } else {
     char* name_chars = reinterpret_cast<char*>(malloc(utf8_len + 1));
     memmove(name_chars, utf8_array, utf8_len);
     name_chars[utf8_len] = '\0';
     const char* value = NULL;
-    printf("Looking for %s\n", name_chars);
     if (environment != NULL) {
       HashMap::Entry* entry = environment->Lookup(
           GetHashmapKeyFromString(name_chars),
           HashMap::StringHash(name_chars),
           false);
       if (entry != NULL) {
         value = reinterpret_cast<char*>(entry->value);
       }
     }
     if (value != NULL) {
@@ skipping 1181 matching lines @@
   EventHandler::Stop();
   return 0;
 }
 
 }  // namespace bin
 }  // namespace dart
 
 int main(int argc, char** argv) {
   return dart::bin::main(argc, argv);
 }