Solution:

There is not uninstaller for MATLAB on UNIX or Linux. To remove MATLAB you will simply need to remove the files. Here's what you should do to completely uninstall MATLAB on a UNIX or Linux machine:

1. If you are running a license manager for MATLAB, shut down the license manager using the 'lmdown' script located in MATLAB's etc folder. If this folder does not exist, you are not running the FlexNet license manager.

2. Remove the entire root MATLAB directory tree using the 'rm -rf' command.

3. Remove the license manager files in the /var/tmp directory. These files should begin with 'lm'.

This should remove MATLAB and the completely from your UNIX or Linux MATLAB.

其实意思就是说删除掉matlab文件就行，

所以需要

            sudo rm -rf   /usr/local/MATLAB