[cleanup] Remove dead code from DeclareLookupSlot and rename it

src/full-codegen/mips64/full-codegen-mips64.cc

Index: src/full-codegen/mips64/full-codegen-mips64.cc
diff --git a/src/full-codegen/mips64/full-codegen-mips64.cc b/src/full-codegen/mips64/full-codegen-mips64.cc
index 759a915658a8d70dcef87d486706c8b51bf145cc..f2bf6a1617a8a9076df28ce69a296993695ab11f 100644
--- a/src/full-codegen/mips64/full-codegen-mips64.cc
+++ b/src/full-codegen/mips64/full-codegen-mips64.cc
@@ -803,7 +803,6 @@ void FullCodeGenerator::VisitVariableDeclaration(
       DCHECK(Smi::FromInt(0) == 0);
       __ mov(a0, zero_reg);  // Smi::FromInt(0) indicates no initial value.
       __ Push(a2, a0);
-      __ Push(Smi::FromInt(variable->DeclarationPropertyAttributes()));
       __ CallRuntime(Runtime::kDeclareLookupSlot);
       PrepareForBailoutForId(proxy->id(), BailoutState::NO_REGISTERS);
       break;
@@ -861,7 +860,6 @@ void FullCodeGenerator::VisitFunctionDeclaration(
       PushOperand(a2);
       // Push initial value for function declaration.
       VisitForStackValue(declaration->fun());
-      PushOperand(Smi::FromInt(variable->DeclarationPropertyAttributes()));
       CallRuntimeWithOperands(Runtime::kDeclareLookupSlot);
       PrepareForBailoutForId(proxy->id(), BailoutState::NO_REGISTERS);
       break;