[turbofan] Remove dead kArchTailCallJSFunction.

src/compiler/s390/code-generator-s390.cc

Index: src/compiler/s390/code-generator-s390.cc
diff --git a/src/compiler/s390/code-generator-s390.cc b/src/compiler/s390/code-generator-s390.cc
index 697005830774f8b23f6ca5eeba73c01a25e23516..a4171980aefff7b41bb54f16734daf394d36f207 100644
--- a/src/compiler/s390/code-generator-s390.cc
+++ b/src/compiler/s390/code-generator-s390.cc
@@ -924,8 +924,7 @@ CodeGenerator::CodeGenResult CodeGenerator::AssembleArchInstruction(
       frame_access_state()->ClearSPDelta();
       break;
     }
-    case kArchTailCallJSFunctionFromJSFunction:
-    case kArchTailCallJSFunction: {
+    case kArchTailCallJSFunctionFromJSFunction: {
       Register func = i.InputRegister(0);
       if (FLAG_debug_code) {
         // Check the function's context matches the context argument.
@@ -934,11 +933,9 @@ CodeGenerator::CodeGenResult CodeGenerator::AssembleArchInstruction(
         __ CmpP(cp, kScratchReg);
         __ Assert(eq, kWrongFunctionContext);
       }
-      if (opcode == kArchTailCallJSFunctionFromJSFunction) {
-        AssemblePopArgumentsAdaptorFrame(kJavaScriptCallArgCountRegister,
-                                         i.TempRegister(0), i.TempRegister(1),
-                                         i.TempRegister(2));
-      }
+      AssemblePopArgumentsAdaptorFrame(kJavaScriptCallArgCountRegister,
+                                       i.TempRegister(0), i.TempRegister(1),
+                                       i.TempRegister(2));
       __ LoadP(ip, FieldMemOperand(func, JSFunction::kCodeEntryOffset));
       __ Jump(ip);
       frame_access_state()->ClearSPDelta();