[crankshaft] Get rid of the StoreFrameContext instruction.

src/crankshaft/ia32/lithium-codegen-ia32.cc

Index: src/crankshaft/ia32/lithium-codegen-ia32.cc
diff --git a/src/crankshaft/ia32/lithium-codegen-ia32.cc b/src/crankshaft/ia32/lithium-codegen-ia32.cc
index 436521ae1dd77be824bc32b7a2746e71b61c40a8..df459fc23f0d1e8bd9d8c68aca212fadf2dc4628 100644
--- a/src/crankshaft/ia32/lithium-codegen-ia32.cc
+++ b/src/crankshaft/ia32/lithium-codegen-ia32.cc
@@ -5281,13 +5281,6 @@ void LCodeGen::DoLoadFieldByIndex(LLoadFieldByIndex* instr) {
   __ bind(&done);
 }
 
-
-void LCodeGen::DoStoreFrameContext(LStoreFrameContext* instr) {
-  Register context = ToRegister(instr->context());
-  __ mov(Operand(ebp, StandardFrameConstants::kContextOffset), context);
-}
-
-
 #undef __
 
 }  // namespace internal