fix pre-commit errors

Signed-off-by: Tomohito ANDO <[email protected]>

aip_x2_gen2_launch/launch/nebula_node_container.launch.py

@@ -12,8 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import os
-
 from ament_index_python.packages import get_package_share_directory
 import launch
 from launch.actions import DeclareLaunchArgument
@@ -83,7 +81,6 @@ def str2vector(string):
     # Model and make
     sensor_model = LaunchConfiguration("sensor_model").perform(context)
     sensor_make, sensor_extension = get_lidar_make(sensor_model)
-    nebula_decoders_share_dir = get_package_share_directory("nebula_decoders")
 
     glog_component = ComposableNode(
         package="glog_component",