Remove unused PS generation code.

pdfium.gyp

 # Copyright 2015 PDFium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'variables': {
     'chromium_code': 1,
 
     'variables': {
       'clang_use_pdfium_plugins%': 0,
@@ skipping 691 matching lines @@
         'core/fxge/fontdata/chromefontdata/FoxitSerifItalic.cpp',
         'core/fxge/fontdata/chromefontdata/FoxitSerifMM.cpp',
         'core/fxge/fontdata/chromefontdata/FoxitSymbol.cpp',
         'core/fxge/freetype/fx_freetype.cpp',
         'core/fxge/ge/fx_ge.cpp',
         'core/fxge/ge/fx_ge_device.cpp',
         'core/fxge/ge/fx_ge_font.cpp',
         'core/fxge/ge/fx_ge_fontmap.cpp',
         'core/fxge/ge/fx_ge_linux.cpp',
         'core/fxge/ge/fx_ge_path.cpp',
-        'core/fxge/ge/fx_ge_ps.cpp',
         'core/fxge/ge/fx_ge_text.cpp',
         'core/fxge/ge/fx_text_int.h',
         'core/fxge/include/fx_dib.h',
         'core/fxge/include/fx_font.h',
         'core/fxge/include/fx_freetype.h',
         'core/fxge/include/fx_ge.h',
         'core/fxge/include/fx_ge_apple.h',
         'core/fxge/include/fx_ge_win32.h',
       ],
       'variables': {
@@ skipping 342 matching lines @@
             'fpdfsdk/fpdfxfa/include/fpdfxfa_app.h',
             'fpdfsdk/fpdfxfa/include/fpdfxfa_doc.h',
             'fpdfsdk/fpdfxfa/include/fpdfxfa_page.h',
             'fpdfsdk/fpdfxfa/include/fpdfxfa_util.h',
           ],
         },
       ]
     }],
   ]
 }