Deleted workspace the wrong way

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Hello,

I have deleted some workspaces by deleting the complete workspace folders in my home folder. Just right mouse click and delete.

Now when I open a terminal I get multiple messages:

bash: /home/lauran/ur5_ws/devel/setup.bash: No such file or directory
bash: /home/lauran/catkin_ws/devel/setup.bash: No such file or directory
bash: /home/lauran/catkin_ws/devel/setup.bash: No such file or directory
bash: /home/lauran/ur5_ws/devel/setup.bash: No such file or directory
bash: /home/lauran/catkin_ws/devel/setup.bash: No such file or directory
bash: /home/lauran/robot_ws/devel/setup.bash: No such file or directory
bash: /home/lauran/robot_ws/devel/setup.bash: No such file or directory

I don't use these workspaces anymore but I've read that I should have deleted my workspaces more properly. Is there a way where i can fix these errors so that there won't a situation where these deleted workspaces cause any problems?

Thank you.