[cleanup] Drop unused scratch register from {load,store}_calling_convention

src/ic/s390/access-compiler-s390.cc

Index: src/ic/s390/access-compiler-s390.cc
diff --git a/src/ic/s390/access-compiler-s390.cc b/src/ic/s390/access-compiler-s390.cc
index 316be715c2a105667c39c827737a80f36a8ff24c..0a3285d5aace31faf54aaeba3154d510d4d8752e 100644
--- a/src/ic/s390/access-compiler-s390.cc
+++ b/src/ic/s390/access-compiler-s390.cc
@@ -19,18 +19,18 @@ void PropertyAccessCompiler::GenerateTailCall(MacroAssembler* masm,
 }
 
 Register* PropertyAccessCompiler::load_calling_convention() {
-  // receiver, name, scratch1, scratch2, scratch3, scratch4.
+  // receiver, name, scratch1, scratch2, scratch3.
   Register receiver = LoadDescriptor::ReceiverRegister();
   Register name = LoadDescriptor::NameRegister();
-  static Register registers[] = {receiver, name, r5, r2, r6, r7};
+  static Register registers[] = {receiver, name, r5, r2, r6};
   return registers;
 }
 
 Register* PropertyAccessCompiler::store_calling_convention() {
-  // receiver, name, scratch1, scratch2, scratch3.
+  // receiver, name, scratch1, scratch2.
   Register receiver = StoreDescriptor::ReceiverRegister();
   Register name = StoreDescriptor::NameRegister();
-  static Register registers[] = {receiver, name, r5, r6, r7};
+  static Register registers[] = {receiver, name, r5, r6};
   return registers;
 }