Polymer/Closure: fix bug in script that generates Closure GYP

third_party/polymer/v1_0/components-chromium/paper-material/compiled_resources2.gyp

 # Copyright 2017 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.
 #
 # NOTE: Created with generate_compiled_resources_gyp.py, please do not edit.
 {
   'targets': [
     {
       'target_name': 'paper-material-extracted',
       'includes': ['../../../../closure_compiler/compile_js2.gypi'],
     },
-    {
-      'target_name': 'paper-material-shared-styles-extracted',
-      'includes': ['../../../../closure_compiler/compile_js2.gypi'],
-    },
   ],
 }