Fixed Build issue in launch file

Signed-off-by: Pranav <pranavkolekar13@gmail.com>

Author: pranavk-2003

nav2_bringup/launch/nav2_toolkit_launch.py

@@ -23,7 +23,6 @@
 from launch_ros.descriptions import ParameterFile
 from nav2_common.launch import RewrittenYaml
 
-
 def generate_launch_description() -> LaunchDescription:
     bringup_dir = get_package_share_directory('nav2_bringup')
     default_params_file = os.path.join(bringup_dir, 'params', 'nav2_params.yaml')