[fullcodegen] Factor out EmitLoadStoreICSlot from archs.

src/full-codegen/arm/full-codegen-arm.cc

Index: src/full-codegen/arm/full-codegen-arm.cc
diff --git a/src/full-codegen/arm/full-codegen-arm.cc b/src/full-codegen/arm/full-codegen-arm.cc
index 804d060217124bbe9ab11a1e4a2c139999a90321..5d94ad944028df7f55447580b9f5b274afa2ee84 100644
--- a/src/full-codegen/arm/full-codegen-arm.cc
+++ b/src/full-codegen/arm/full-codegen-arm.cc
@@ -4097,12 +4097,6 @@ void FullCodeGenerator::ClearPendingMessage() {
 }
 
 
-void FullCodeGenerator::EmitLoadStoreICSlot(FeedbackVectorSlot slot) {
-  DCHECK(!slot.IsInvalid());
-  __ mov(VectorStoreICTrampolineDescriptor::SlotRegister(),
-         Operand(SmiFromSlot(slot)));
-}
-
 void FullCodeGenerator::DeferredCommands::EmitCommands() {
   DCHECK(!result_register().is(r1));
   __ Pop(result_register());  // Restore the accumulator.