[compiler] Remove dead kMustNotHaveEagerFrame flag.

src/crankshaft/lithium.cc

 // 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.
 
 #include "src/crankshaft/lithium.h"
 
 #include "src/ast/scopes.h"
 
 #if V8_TARGET_ARCH_IA32
 #include "src/crankshaft/ia32/lithium-ia32.h"  // NOLINT
@@ skipping 450 matching lines @@
         &assembler, nullptr, info(), assembler.CodeObject());
     generator.FinishCode(code);
     CommitDependencies(code);
     Handle<ByteArray> source_positions =
         generator.source_position_table_builder()->ToSourcePositionTable(
             info()->isolate(), Handle<AbstractCode>::cast(code));
     code->set_source_position_table(*source_positions);
     code->set_is_crankshafted(true);
 
     CodeGenerator::PrintCode(code, info());
-    DCHECK(!(info()->GetMustNotHaveEagerFrame() &&
-             generator.NeedsEagerFrame()));
     return code;
   }
   assembler.AbortedCodeGeneration();
   return Handle<Code>::null();
 }
 
 
 void LChunk::set_allocated_double_registers(BitVector* allocated_registers) {
   allocated_double_registers_ = allocated_registers;
   BitVector* doubles = allocated_double_registers();
@@ skipping 239 matching lines @@
 
 LPhase::~LPhase() {
   if (ShouldProduceTraceOutput()) {
     isolate()->GetHTracer()->TraceLithium(name(), chunk_);
   }
 }
 
 
 }  // namespace internal
 }  // namespace v8