[crankshaft] Delete unused Hydrogen-BCH code

src/crankshaft/hydrogen.cc

 // Copyright 2013 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.
 
 #include "src/crankshaft/hydrogen.h"
 
 #include <sstream>
 
 #include "src/allocation-site-scopes.h"
 #include "src/ast/ast-numbering.h"
 #include "src/ast/scopeinfo.h"
 #include "src/code-factory.h"
 #include "src/crankshaft/hydrogen-bce.h"
-#include "src/crankshaft/hydrogen-bch.h"
 #include "src/crankshaft/hydrogen-canonicalize.h"
 #include "src/crankshaft/hydrogen-check-elimination.h"
 #include "src/crankshaft/hydrogen-dce.h"
 #include "src/crankshaft/hydrogen-dehoist.h"
 #include "src/crankshaft/hydrogen-environment-liveness.h"
 #include "src/crankshaft/hydrogen-escape-analysis.h"
 #include "src/crankshaft/hydrogen-gvn.h"
 #include "src/crankshaft/hydrogen-infer-representation.h"
 #include "src/crankshaft/hydrogen-infer-types.h"
 #include "src/crankshaft/hydrogen-load-elimination.h"
@@ skipping 4496 matching lines @@
   if (FLAG_store_elimination) Run<HStoreEliminationPhase>();
 
   Run<HRangeAnalysisPhase>();
 
   Run<HComputeChangeUndefinedToNaN>();
 
   // Eliminate redundant stack checks on backwards branches.
   Run<HStackCheckEliminationPhase>();
 
   if (FLAG_array_bounds_checks_elimination) Run<HBoundsCheckEliminationPhase>();
-  if (FLAG_array_bounds_checks_hoisting) Run<HBoundsCheckHoistingPhase>();
   if (FLAG_array_index_dehoisting) Run<HDehoistIndexComputationsPhase>();
   if (FLAG_dead_code_elimination) Run<HDeadCodeEliminationPhase>();
 
   RestoreActualValues();
 
   // Find unreachable code a second time, GVN and other optimizations may have
   // made blocks unreachable that were previously reachable.
   Run<HMarkUnreachableBlocksPhase>();
 
   return true;
@@ skipping 9034 matching lines @@
     isolate()->GetHTracer()->TraceHydrogen(name(), graph_);
   }
 
 #ifdef DEBUG
   graph_->Verify(false);  // No full verify.
 #endif
 }
 
 }  // namespace internal
 }  // namespace v8