[crankshaft] Get rid of the StoreFrameContext instruction.

src/crankshaft/mips/lithium-mips.h

Index: src/crankshaft/mips/lithium-mips.h
diff --git a/src/crankshaft/mips/lithium-mips.h b/src/crankshaft/mips/lithium-mips.h
index 3bc89533b9b23667ac8f50a295fe126b4d29bd16..7d41093be11fc331f37e0d1a76343d82a643b89c 100644
--- a/src/crankshaft/mips/lithium-mips.h
+++ b/src/crankshaft/mips/lithium-mips.h
@@ -130,7 +130,6 @@ class LCodeGen;
   V(StackCheck)                              \
   V(StoreCodeEntry)                          \
   V(StoreContextSlot)                        \
-  V(StoreFrameContext)                       \
   V(StoreKeyed)                              \
   V(StoreKeyedGeneric)                       \
   V(StoreNamedField)                         \
@@ -2468,18 +2467,6 @@ class LLoadFieldByIndex final : public LTemplateInstruction<1, 2, 0> {
 };
 
 
-class LStoreFrameContext: public LTemplateInstruction<0, 1, 0> {
- public:
-  explicit LStoreFrameContext(LOperand* context) {
-    inputs_[0] = context;
-  }
-
-  LOperand* context() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(StoreFrameContext, "store-frame-context")
-};
-
-
 class LChunkBuilder;
 class LPlatformChunk final : public LChunk {
  public: