[Sheriff] Revert "Add support for keyed-call on arrays of fast elements"

src/arm/lithium-arm.cc

Index: src/arm/lithium-arm.cc
diff --git a/src/arm/lithium-arm.cc b/src/arm/lithium-arm.cc
index 53ba309e61a3f5274121e3f0afc5ff87274baea1..787fc81aa881eaa26685e76c4627f30bd2e9c12a 100644
--- a/src/arm/lithium-arm.cc
+++ b/src/arm/lithium-arm.cc
@@ -1328,10 +1328,8 @@ LInstruction* LChunkBuilder::DoCallNewArray(HCallNewArray* instr) {
 LInstruction* LChunkBuilder::DoCallFunction(HCallFunction* instr) {
   LOperand* context = UseFixed(instr->context(), cp);
   LOperand* function = UseFixed(instr->function(), r1);
-  LCallFunction* call = new(zone()) LCallFunction(context, function);
-  LInstruction* result = DefineFixed(call, r0);
-  if (instr->IsTailCall()) return result;
-  return MarkAsCall(result, instr);
+  return MarkAsCall(
+      DefineFixed(new(zone()) LCallFunction(context, function), r0), instr);
 }