Depsgraph: Remove unsued node flag

source/blender/depsgraph/intern/builder/deg_builder_nodes.cc

@@ -560,7 +560,6 @@ void DepsgraphNodeBuilder::build_animdata(ID *id)
  */
 OperationDepsNode *DepsgraphNodeBuilder::build_driver(ID *id, FCurve *fcu)
 {
-	ChannelDriver *driver = fcu->driver;
 	ID *id_cow = get_cow_id(id);
 
 	/* Create data node for this driver */
@@ -584,11 +583,6 @@ OperationDepsNode *DepsgraphNodeBuilder::build_driver(ID *id, FCurve *fcu)
 		                               fcu->array_index);
 	}
 
-	/* tag "scripted expression" drivers as needing Python (due to GIL issues, etc.) */
-	if (driver->type == DRIVER_TYPE_PYTHON) {
-		driver_op->flag |= DEPSOP_FLAG_USES_PYTHON;
-	}
-
 	/* return driver node created */
 	return driver_op;
 }

source/blender/depsgraph/intern/nodes/deg_node_operation.h

@@ -45,11 +45,6 @@ typedef enum eDepsOperation_Flag {
 
 	/* node was directly modified, causing need for update */
 	DEPSOP_FLAG_DIRECTLY_MODIFIED  = (1 << 1),
-
-	/* Operation is evaluated using CPython; has GIL and security
-	 * implications...
-	 */
-	DEPSOP_FLAG_USES_PYTHON        = (1 << 2),
 } eDepsOperation_Flag;
 
 /* Atomic Operation - Base type for all operations */