[fullcodegen] Factor out EmitLoadStoreICSlot from archs.

src/full-codegen/x87/full-codegen-x87.cc

Index: src/full-codegen/x87/full-codegen-x87.cc
diff --git a/src/full-codegen/x87/full-codegen-x87.cc b/src/full-codegen/x87/full-codegen-x87.cc
index b11b09bf995c3b933344834a725def74e6596870..067354966ff6fe23b8efb6c31f8fb39ceb3fcdeb 100644
--- a/src/full-codegen/x87/full-codegen-x87.cc
+++ b/src/full-codegen/x87/full-codegen-x87.cc
@@ -3978,12 +3978,6 @@ void FullCodeGenerator::ClearPendingMessage() {
 }
 
 
-void FullCodeGenerator::EmitLoadStoreICSlot(FeedbackVectorSlot slot) {
-  DCHECK(!slot.IsInvalid());
-  __ mov(VectorStoreICTrampolineDescriptor::SlotRegister(),
-         Immediate(SmiFromSlot(slot)));
-}
-
 void FullCodeGenerator::DeferredCommands::EmitCommands() {
   DCHECK(!result_register().is(edx));
   __ Pop(result_register());  // Restore the accumulator.