[cleanup] Remove dead code from DeclareLookupSlot and rename it

src/full-codegen/arm64/full-codegen-arm64.cc

Index: src/full-codegen/arm64/full-codegen-arm64.cc
diff --git a/src/full-codegen/arm64/full-codegen-arm64.cc b/src/full-codegen/arm64/full-codegen-arm64.cc
index f34b76e2e030fb15a6e4899b030376495e830984..01aa77f8b7aec4053c77588912c0761c74abe577 100644
--- a/src/full-codegen/arm64/full-codegen-arm64.cc
+++ b/src/full-codegen/arm64/full-codegen-arm64.cc
@@ -797,14 +797,11 @@ void FullCodeGenerator::VisitVariableDeclaration(
 
     case VariableLocation::LOOKUP: {
       Comment cmnt(masm_, "[ VariableDeclaration");
-      __ Mov(x2, Operand(variable->name()));
-      // Declaration nodes are always introduced in one of four modes.
-      DCHECK(IsDeclaredVariableMode(mode));
+      DCHECK_EQ(VAR, mode);
       DCHECK(!hole_init);
-      // Pushing 0 (xzr) indicates no initial value.
-      __ Push(x2, xzr);
-      __ Push(Smi::FromInt(variable->DeclarationPropertyAttributes()));
-      __ CallRuntime(Runtime::kDeclareLookupSlot);
+      __ Mov(x2, Operand(variable->name()));
+      __ Push(x2);
+      __ CallRuntime(Runtime::kDeclareEvalVar);
       PrepareForBailoutForId(proxy->id(), BailoutState::NO_REGISTERS);
       break;
     }
@@ -861,8 +858,7 @@ void FullCodeGenerator::VisitFunctionDeclaration(
       PushOperand(x2);
       // Push initial value for function declaration.
       VisitForStackValue(declaration->fun());
-      PushOperand(Smi::FromInt(variable->DeclarationPropertyAttributes()));
-      CallRuntimeWithOperands(Runtime::kDeclareLookupSlot);
+      CallRuntimeWithOperands(Runtime::kDeclareEvalFunction);
       PrepareForBailoutForId(proxy->id(), BailoutState::NO_REGISTERS);
       break;
     }