rqt trajectory plot: revert to upstream

various patches got merged.

Author: v4hn

sources.repos

@@ -821,8 +821,8 @@ repositories:
     version: master
   rqt_joint_trajectory_plot:
     type: git
-    url: https://github.com/ros-o/rqt_joint_trajectory_plot.git
-    version: obese-devel
+    url: https://github.com/tork-a/rqt_joint_trajectory_plot.git
+    version: master
   rqt_launch:
     type: git
     url: https://github.com/ros-visualization/rqt_launch.git