NaCl: Remove unused file string_encoding.cc

ppapi/native_client/src/trusted/plugin/string_encoding.h

Index: ppapi/native_client/src/trusted/plugin/string_encoding.h
diff --git a/ppapi/native_client/src/trusted/plugin/string_encoding.h b/ppapi/native_client/src/trusted/plugin/string_encoding.h
deleted file mode 100644
index cde7c7c1c36d3b7422836181b721174423ae150a..0000000000000000000000000000000000000000
--- a/ppapi/native_client/src/trusted/plugin/string_encoding.h
+++ /dev/null
@@ -1,21 +0,0 @@
-/*
- * Copyright 2011 The Chromium Authors. All rights reserved.
- * Use of this source code is governed by a BSD-style license that can
- * be found in the LICENSE file.
- */
-
-#ifndef NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_STRING_ENCODING_H_
-#define NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_STRING_ENCODING_H_
-
-#include <stdlib.h>
-
-namespace plugin {
-
-bool ByteStringAsUTF8(const char* input, size_t input_byte_count,
-                      char** result, size_t* result_byte_count);
-bool ByteStringFromUTF8(const char* input, size_t input_byte_count,
-                        char** result, size_t* result_byte_count);
-
-}
-
-#endif  // NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_STRING_ENCODING_H_