chore: removed unused dep

Signed-off-by: Kenzo Lobos-Tsunekawa <kenzo.lobos@tier4.jp>

Author: knzo25

sensing/autoware_pointcloud_preprocessor/package.xml

@@ -32,7 +32,6 @@
   <depend>autoware_point_types</depend>
   <depend>autoware_utils</depend>
   <depend>cgal</depend>
-  <depend>cuda_blackboard</depend>
   <depend>cv_bridge</depend>
   <depend>diagnostic_updater</depend>
   <depend>image_transport</depend>