Remove obsolete lookup-inl.h header.

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 826 matching lines @@
         '../../src/lithium-codegen.cc',
         '../../src/lithium-codegen.h',
         '../../src/lithium.cc',
         '../../src/lithium.h',
         '../../src/lithium-inl.h',
         '../../src/log-inl.h',
         '../../src/log-utils.cc',
         '../../src/log-utils.h',
         '../../src/log.cc',
         '../../src/log.h',
-        '../../src/lookup-inl.h',
         '../../src/lookup.cc',
         '../../src/lookup.h',
         '../../src/macro-assembler.h',
         '../../src/messages.cc',
         '../../src/messages.h',
         '../../src/modules.cc',
         '../../src/modules.h',
         '../../src/msan.h',
         '../../src/objects-debug.cc',
         '../../src/objects-inl.h',
@@ skipping 1231 matching lines @@
         }],
         ['want_separate_host_toolset==1', {
           'toolsets': ['host'],
         }, {
           'toolsets': ['target'],
         }],
       ],
     },
   ],
 }