VM: Remove _leftShiftWithMask32.

runtime/vm/bootstrap_natives.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_BOOTSTRAP_NATIVES_H_
 #define VM_BOOTSTRAP_NATIVES_H_
 
 #include "vm/native_entry.h"
 
 // bootstrap dart natives used in the core dart library.
@@ skipping 27 matching lines @@
   V(Integer_bitXorFromInteger, 2)                                              \
   V(Integer_addFromInteger, 2)                                                 \
   V(Integer_subFromInteger, 2)                                                 \
   V(Integer_mulFromInteger, 2)                                                 \
   V(Integer_truncDivFromInteger, 2)                                            \
   V(Integer_moduloFromInteger, 2)                                              \
   V(Integer_greaterThanFromInteger, 2)                                         \
   V(Integer_equalToInteger, 2)                                                 \
   V(Integer_fromEnvironment, 3)                                                \
   V(Integer_parse, 1)                                                          \
-  V(Integer_leftShiftWithMask32, 3)                                            \
   V(Bool_fromEnvironment, 3)                                                   \
   V(CapabilityImpl_factory, 1)                                                 \
   V(CapabilityImpl_equals, 2)                                                  \
   V(CapabilityImpl_get_hashcode, 1)                                            \
   V(RawReceivePortImpl_factory, 1)                                             \
   V(RawReceivePortImpl_get_id, 1)                                              \
   V(RawReceivePortImpl_get_sendport, 1)                                        \
   V(RawReceivePortImpl_closeInternal, 1)                                       \
   V(SendPortImpl_get_id, 1)                                                    \
   V(SendPortImpl_get_hashcode, 1)                                              \
@@ skipping 371 matching lines @@
 #ifndef PRODUCT
   MIRRORS_BOOTSTRAP_NATIVE_LIST(DECLARE_BOOTSTRAP_NATIVE)
 #endif
 
 #undef DECLARE_BOOTSTRAP_NATIVE
 };
 
 }  // namespace dart
 
 #endif  // VM_BOOTSTRAP_NATIVES_H_