NaCl/GYP: remove references to prep_toolchain.

ppapi/native_client/src/untrusted/pnacl_irt_shim/pnacl_irt_shim.gyp

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'includes': [
     '../../../../../native_client/build/untrusted.gypi',
   ],
   'targets': [
     {
@@ skipping 33 matching lines @@
           'shim_ppapi.c',
         ],
         'extra_args': [
           '--strip-debug',
         ],
         # Indicate that shim should not depend on unstable IRT hook interface.
         'compile_flags': [
           '-DPNACL_SHIM_AOT',
         ],
       },
-      'dependencies': [
-        '<(DEPTH)/native_client/tools.gyp:prep_toolchain',
-      ],
     },
     # Smaller shim library for PNaCl in-browser translation.
     # Uses an unstable IRT hook interface to get the shim from the IRT itself.
     # If we ever change that hook interface or change the in-IRT shim's ABI,
     # we would need to clear the translation cache to match the new IRT.
     {
       'target_name': 'browser',
       'type': 'none',
       'variables': {
         # Same output file name as shim_aot, so that we don't need to change
@@ skipping 13 matching lines @@
         'enable_arm': 1,
         'enable_mips': 1,
         'sources': [
           'shim_entry.c',
           'shim_ppapi.c',
         ],
         'extra_args': [
           '--strip-debug',
         ],
       },
-      'dependencies': [
-        '<(DEPTH)/native_client/tools.gyp:prep_toolchain',
-      ],
     },
     {
       # Second half of shim library for PNaCl in-browser translation.
       # This half goes into the IRT and is returned by the unstable
       # IRT hook interface.
       'target_name': 'irt',
       'type': 'none',
       'variables': {
         'nlib_target': 'libpnacl_irt_shim_for_irt.a',
         'build_glibc': 0,
         'build_newlib': 0,
         # Unlike the above, build this the way the IRT is built so that the
         # output library directories match the IRT linking search paths.
         'build_irt': 1,
         'sources': [
           'irt_shim_ppapi.c',
           'pnacl_shim.c',
         ],
       },
-      'dependencies': [
-        '<(DEPTH)/native_client/tools.gyp:prep_toolchain',
-      ],
     },
   ],
 }