functions.php

add_action(
	'init',
	function() {
		if ( isset( $_GET['layout_nuke_js'] ) && is_numeric( $_GET['layout_nuke_js'] ) ) {
			$data      = get_post_meta( $_GET['layout_nuke_js'], '_fl_builder_data_settings', true );
			$draft     = get_post_meta( $_GET['layout_nuke_js'], '_fl_builder_draft_settings', true );
			$data->js  = '';
			$draft->js = '';
			update_post_meta( $_GET['layout_nuke_js'], '_fl_builder_data_settings', $data );
			update_post_meta( $_GET['layout_nuke_js'], '_fl_builder_draft_settings', $draft );
		}
	}
);