[crankshaft] Get rid of the StoreFrameContext instruction.

src/crankshaft/s390/lithium-codegen-s390.cc

Index: src/crankshaft/s390/lithium-codegen-s390.cc
diff --git a/src/crankshaft/s390/lithium-codegen-s390.cc b/src/crankshaft/s390/lithium-codegen-s390.cc
index 9fc58f9d811b932348e54858946ae4cbf374256e..83d0b2c732a449ff4120ecc8fe591799956fcd42 100644
--- a/src/crankshaft/s390/lithium-codegen-s390.cc
+++ b/src/crankshaft/s390/lithium-codegen-s390.cc
@@ -5663,11 +5663,7 @@ void LCodeGen::DoLoadFieldByIndex(LLoadFieldByIndex* instr) {
   __ bind(&done);
 }
 
-void LCodeGen::DoStoreFrameContext(LStoreFrameContext* instr) {
-  Register context = ToRegister(instr->context());
-  __ StoreP(context, MemOperand(fp, StandardFrameConstants::kContextOffset));
-}
-
 #undef __
+
 }  // namespace internal
 }  // namespace v8