Clean up mangeengine files on central server

On our central server the drive desktop central is installed on is only about 40 gb. We have very little on this drive besides desktop central. For the last few updates I have been struggling to cleanup space as it required me to have at least 5.88 gb free. After updating to the latest build I have 5.67 free. I have cleared all files in the patchbackup folder and cleaned up everything I could according to https://www.manageengine.com/products/desktop-central/removing-unwanted-files-from-dc-how-to.html.
I also did not see the MySQL folder only see a pgsql and sgsql_old. I have attached a screenshot of my file sizes please let me know if there is anything else safe to clean up to free up a little space.