Removes remants of precompiled .jar files from dartc build

compiler/dart-compiler.gyp

 # Copyright (c) 2012, 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.
 
 {
   'includes': [
     'sources.gypi',
     'test_sources.gypi',
   ],
   'targets': [
     {
       'target_name': 'dartc',
       'type': 'none',
       'actions': [
         {
           'action_name': 'build_dartc',
           'inputs': [
             'sources.gypi',
             'test_sources.gypi',
-            'corelib_sources.gypi',
-            'compiler_corelib_sources.gypi',
             '<@(java_sources)',
             '<@(java_resources)',
             '<@(javatests_sources)',
             '<@(javatests_resources)',
             'dartc.xml',
             'scripts/dartc.sh',
             'scripts/dartc_run.sh',
             'scripts/dartc_metrics.sh',
             '../third_party/args4j/2.0.12/args4j-2.0.12.jar',
             '../third_party/guava/r09/guava-r09.jar',
@@ skipping 37 matching lines @@
         },
       ],
     },
     {
       # GYP won't generate a catch-all target if there's only one target.
       'target_name': 'dummy',
       'type': 'none',
     },
   ],
 }