Revert r1745: "Add an option to prune targets"

test/prune_targets/test1.gyp

Index: test/prune_targets/test1.gyp
diff --git a/test/prune_targets/test1.gyp b/test/prune_targets/test1.gyp
deleted file mode 100644
index b65ec19fa4c02d28e41447ba91f64e69b087e8fe..0000000000000000000000000000000000000000
--- a/test/prune_targets/test1.gyp
+++ /dev/null
@@ -1,26 +0,0 @@
-# Copyright (c) 2013 Google Inc. 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': 'program1',
-      'type': 'executable',
-      'sources': [ 'program.cc' ],
-      'dependencies': [ 'test2.gyp:lib1' ],
-    },
-    {
-      'target_name': 'program2',
-      'type': 'executable',
-      'sources': [ 'program.cc' ],
-      'dependencies': [ 'test2.gyp:lib2' ],
-    },
-    {
-      'target_name': 'program3',
-      'type': 'executable',
-      'sources': [ 'program.cc' ],
-      'dependencies': [ 'test2.gyp:lib3' ],
-    },
-  ],
-}