Remove GYP files.

third_party/android_data_chart/android_data_chart.gyp

Index: third_party/android_data_chart/android_data_chart.gyp
diff --git a/third_party/android_data_chart/android_data_chart.gyp b/third_party/android_data_chart/android_data_chart.gyp
deleted file mode 100644
index 1610bd9ca5925dc4b33a96700bda296295e4338d..0000000000000000000000000000000000000000
--- a/third_party/android_data_chart/android_data_chart.gyp
+++ /dev/null
@@ -1,19 +0,0 @@
-# Copyright 2015 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.
-
-{
-  'targets': [
-    {
-      'target_name': 'android_data_chart_java',
-      'type': 'none',
-      'variables': {
-        'java_in_dir': 'java',
-        'has_java_resources': 1,
-        'R_package': 'org.chromium.third_party.android',
-        'R_package_relpath': 'org/chromium/third_party/android',
-      },
-      'includes': [ '../../build/java.gypi' ],
-    },
-  ],
-}