[interpreter] Deprecate DeleteLookupSlot bytecode.

src/interpreter/bytecode-array-builder.cc

Index: src/interpreter/bytecode-array-builder.cc
diff --git a/src/interpreter/bytecode-array-builder.cc b/src/interpreter/bytecode-array-builder.cc
index 91905079d113b0b85a61dda9a9a8bed17a651e4f..c84fc2d498aa83bd93aefd7c3093561cb0a16efb 100644
--- a/src/interpreter/bytecode-array-builder.cc
+++ b/src/interpreter/bytecode-array-builder.cc
@@ -1203,12 +1203,6 @@ BytecodeArrayBuilder& BytecodeArrayBuilder::Delete(Register object,
 }
 
 
-BytecodeArrayBuilder& BytecodeArrayBuilder::DeleteLookupSlot() {
-  Output(Bytecode::kDeleteLookupSlot);
-  return *this;
-}
-
-
 size_t BytecodeArrayBuilder::GetConstantPoolEntry(Handle<Object> object) {
   return constant_array_builder()->Insert(object);
 }