[crankshaft] Delete unused Hydrogen-BCH code

src/flag-definitions.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This file defines all of the flags.  It is separated into different section,
 // for Debug, Release, Logging and Profiling, etc.  To add a new flag, find the
 // correct section, and use one of the DEFINE_ macros, without a trailing ';'.
 //
 // This include does not have a guard, because it is a template-style include,
 // which can be included multiple times in different modes.  It expects to have
@@ skipping 349 matching lines @@
 DEFINE_BOOL(print_deopt_stress, false, "print number of possible deopt points")
 DEFINE_BOOL(trap_on_deopt, false, "put a break point before deoptimizing")
 DEFINE_BOOL(trap_on_stub_deopt, false,
             "put a break point before deoptimizing a stub")
 DEFINE_BOOL(deoptimize_uncommon_cases, true, "deoptimize uncommon cases")
 DEFINE_BOOL(polymorphic_inlining, true, "polymorphic inlining")
 DEFINE_BOOL(use_osr, true, "use on-stack replacement")
 DEFINE_BOOL(array_bounds_checks_elimination, true,
             "perform array bounds checks elimination")
 DEFINE_BOOL(trace_bce, false, "trace array bounds check elimination")
-DEFINE_BOOL(array_bounds_checks_hoisting, false,
-            "perform array bounds checks hoisting")
 DEFINE_BOOL(array_index_dehoisting, true, "perform array index dehoisting")
 DEFINE_BOOL(analyze_environment_liveness, true,
             "analyze liveness of environment slots and zap dead values")
 DEFINE_BOOL(load_elimination, true, "use load elimination")
 DEFINE_BOOL(check_elimination, true, "use check elimination")
 DEFINE_BOOL(store_elimination, false, "use store elimination")
 DEFINE_BOOL(dead_code_elimination, true, "use dead code elimination")
 DEFINE_BOOL(fold_constants, true, "use constant folding")
 DEFINE_BOOL(trace_dead_code_elimination, false, "trace dead code elimination")
 DEFINE_BOOL(unreachable_code_elimination, true, "eliminate unreachable code")
@@ skipping 787 matching lines @@
 #undef DEFINE_ALIAS_FLOAT
 #undef DEFINE_ALIAS_ARGS
 
 #undef FLAG_MODE_DECLARE
 #undef FLAG_MODE_DEFINE
 #undef FLAG_MODE_DEFINE_DEFAULTS
 #undef FLAG_MODE_META
 #undef FLAG_MODE_DEFINE_IMPLICATIONS
 
 #undef COMMA