PPC: Remove unnecessay file from v8.gyp

tools/gyp/v8.gyp

 # Copyright 2012 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 1534 matching lines @@
             '../../src/ppc/codegen-ppc.cc',
             '../../src/ppc/codegen-ppc.h',
             '../../src/ppc/constants-ppc.h',
             '../../src/ppc/constants-ppc.cc',
             '../../src/ppc/cpu-ppc.cc',
             '../../src/ppc/deoptimizer-ppc.cc',
             '../../src/ppc/disasm-ppc.cc',
             '../../src/ppc/frames-ppc.cc',
             '../../src/ppc/frames-ppc.h',
             '../../src/ppc/interface-descriptors-ppc.cc',
-            '../../src/ppc/interface-descriptors-ppc.h',
             '../../src/ppc/macro-assembler-ppc.cc',
             '../../src/ppc/macro-assembler-ppc.h',
             '../../src/ppc/simulator-ppc.cc',
             '../../src/ppc/simulator-ppc.h',
             '../../src/regexp/ppc/regexp-macro-assembler-ppc.cc',
             '../../src/regexp/ppc/regexp-macro-assembler-ppc.h',
           ],
         }],
         ['v8_target_arch=="s390" or v8_target_arch=="s390x"', {
           'sources': [  ### gcmole(arch:s390) ###
@@ skipping 705 matching lines @@
         }],
         ['want_separate_host_toolset==1', {
           'toolsets': ['host'],
         }, {
           'toolsets': ['target'],
         }],
       ],
     },
   ],
 }