This is something you will have configured in the options file on your license manager server and will apply to all sessions. If you wish to disable this then stop your server, look in your options file for a line:
And comment it out:
Now start the server again.
Hope this helps!
If you need more help regarding the license manager, you may create a case at the below address:
DISCLAIMER: These are my own views and in no way depict those of MathWorks.