Hello, I recently installed Matlab R2019a on my Mac (macOS Mojave Version 10.14). I then deleted the previous version I used (R2017b) by moving MATLAB_R2019a.app to the Trash and then emptying the Trash. However, a few hours later, R2017b was back in my Applications folder. Since then I have repeated this several times, also after first deactivating R2017b, but every time R2017b gets back in my Applications folder, occupying 15 GB on my harddisk. How can I remove R2017b permanently? Thank you.