Delete unused path_utils.* component.

gyp/tools.gyp

 # GYP file to build various tools.
 #
 # To build on Linux:
 #  ./gyp_skia tools.gyp && make tools
 #
 {
   'includes': [
     'apptype_console.gypi',
   ],
   'targets': [
@@ skipping 508 matching lines @@
     },
     {
       'target_name': 'filter',
       'type': 'executable',
       'include_dirs' : [
         '../src/core',
         '../src/utils/debugger',
       ],
       'sources': [
         '../tools/filtermain.cpp',
-        '../tools/path_utils.h',
-        '../tools/path_utils.cpp',
         '../src/utils/debugger/SkDrawCommand.h',
         '../src/utils/debugger/SkDrawCommand.cpp',
         '../src/utils/debugger/SkDebugCanvas.h',
         '../src/utils/debugger/SkDebugCanvas.cpp',
         '../src/utils/debugger/SkObjectParser.h',
         '../src/utils/debugger/SkObjectParser.cpp',
       ],
       'dependencies': [
         'skia_lib.gyp:skia_lib',
         'tools.gyp:picture_utils',
@@ skipping 84 matching lines @@
             'type': 'executable',
             'sources': [
               '../tools/win_lcid.cpp',
             ],
           },
         ],
       },
     ],
   ],
 }