[fullcodegen] Factor out EmitLoadStoreICSlot from archs.

src/full-codegen/mips64/full-codegen-mips64.cc

Index: src/full-codegen/mips64/full-codegen-mips64.cc
diff --git a/src/full-codegen/mips64/full-codegen-mips64.cc b/src/full-codegen/mips64/full-codegen-mips64.cc
index 9b48da1244d7255b0e28dfeae413103d656d802c..2d5ae36c77c0730e63093705edf14697a241360a 100644
--- a/src/full-codegen/mips64/full-codegen-mips64.cc
+++ b/src/full-codegen/mips64/full-codegen-mips64.cc
@@ -4118,12 +4118,6 @@ void FullCodeGenerator::ClearPendingMessage() {
 }
 
 
-void FullCodeGenerator::EmitLoadStoreICSlot(FeedbackVectorSlot slot) {
-  DCHECK(!slot.IsInvalid());
-  __ li(VectorStoreICTrampolineDescriptor::SlotRegister(),
-        Operand(SmiFromSlot(slot)));
-}
-
 void FullCodeGenerator::DeferredCommands::EmitCommands() {
   __ Pop(result_register());  // Restore the accumulator.
   __ Pop(a1);                 // Get the token.