Remove unnecessary arguments. (backport of #1389) (#1390)

Probably leftover from copy-paste.

Author: mergify[bot]

ur_robot_driver/launch/ur_rsp.launch.py

@@ -334,30 +334,6 @@ def generate_launch_description():
             description="Enable headless mode for robot control",
         )
     )
-    declared_arguments.append(
-        DeclareLaunchArgument(
-            "initial_joint_controller",
-            default_value="scaled_joint_trajectory_controller",
-            description="Initially loaded robot controller.",
-        )
-    )
-    declared_arguments.append(
-        DeclareLaunchArgument(
-            "activate_joint_controller",
-            default_value="true",
-            description="Activate loaded joint controller.",
-        )
-    )
-    declared_arguments.append(
-        DeclareLaunchArgument("launch_rviz", default_value="true", description="Launch RViz?")
-    )
-    declared_arguments.append(
-        DeclareLaunchArgument(
-            "launch_dashboard_client",
-            default_value="true",
-            description="Launch Dashboard Client?",
-        )
-    )
     declared_arguments.append(
         DeclareLaunchArgument(
             "use_tool_communication",