[compiler] Remove support for concurrent OSR.

src/s390/builtins-s390.cc

Index: src/s390/builtins-s390.cc
diff --git a/src/s390/builtins-s390.cc b/src/s390/builtins-s390.cc
index 35aaeb95d286b55fe8c861a24eab40f44e29b16c..a8934f3ed9a6ea3211351c6195c17efa81d03e9b 100644
--- a/src/s390/builtins-s390.cc
+++ b/src/s390/builtins-s390.cc
@@ -1403,22 +1403,6 @@ void Builtins::Generate_OnStackReplacement(MacroAssembler* masm) {
   __ Ret();
 }
 
-void Builtins::Generate_OsrAfterStackCheck(MacroAssembler* masm) {
-  // We check the stack limit as indicator that recompilation might be done.
-  Label ok;
-  __ CmpLogicalP(sp, RootMemOperand(Heap::kStackLimitRootIndex));
-  __ bge(&ok, Label::kNear);
-  {
-    FrameScope scope(masm, StackFrame::INTERNAL);
-    __ CallRuntime(Runtime::kStackGuard);
-  }
-  __ Jump(masm->isolate()->builtins()->OnStackReplacement(),
-          RelocInfo::CODE_TARGET);
-
-  __ bind(&ok);
-  __ Ret();
-}
-
 // static
 void Builtins::Generate_DatePrototype_GetField(MacroAssembler* masm,
                                                int field_index) {