[turbofan] Remove dead kArchTailCallJSFunction.

src/compiler/instruction-scheduler.cc

 // Copyright 2015 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/compiler/instruction-scheduler.h"
 
 #include "src/base/adapters.h"
 #include "src/base/utils/random-number-generator.h"
 
 namespace v8 {
@@ skipping 266 matching lines @@
     case kArchPrepareCallCFunction:
     case kArchPrepareTailCall:
     case kArchCallCFunction:
     case kArchCallCodeObject:
     case kArchCallJSFunction:
       return kHasSideEffect;
 
     case kArchTailCallCodeObjectFromJSFunction:
     case kArchTailCallCodeObject:
     case kArchTailCallJSFunctionFromJSFunction:
-    case kArchTailCallJSFunction:
     case kArchTailCallAddress:
       return kHasSideEffect | kIsBlockTerminator;
 
     case kArchDeoptimize:
     case kArchJmp:
     case kArchLookupSwitch:
     case kArchTableSwitch:
     case kArchRet:
     case kArchThrowTerminator:
       return kIsBlockTerminator;
@@ skipping 57 matching lines @@
       }
     }
 
     node->set_total_latency(max_latency + node->latency());
   }
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8