MIPS: port Remove the fcontext field from all contexts.

src/mips/code-stubs-mips.cc

Index: src/mips/code-stubs-mips.cc
diff --git a/src/mips/code-stubs-mips.cc b/src/mips/code-stubs-mips.cc
index 1aa1838befd3a305e5fe31a27434451405a07a22..234a7dd402174c085c13615e311b35ae3811efb3 100644
--- a/src/mips/code-stubs-mips.cc
+++ b/src/mips/code-stubs-mips.cc
@@ -166,7 +166,6 @@ void FastNewContextStub::Generate(MacroAssembler* masm) {
   // Setup the fixed slots.
   __ li(a1, Operand(Smi::FromInt(0)));
   __ sw(a3, MemOperand(v0, Context::SlotOffset(Context::CLOSURE_INDEX)));
-  __ sw(v0, MemOperand(v0, Context::SlotOffset(Context::FCONTEXT_INDEX)));
   __ sw(cp, MemOperand(v0, Context::SlotOffset(Context::PREVIOUS_INDEX)));
   __ sw(a1, MemOperand(v0, Context::SlotOffset(Context::EXTENSION_INDEX)));