There is some information about the ODBC drivers for MySQL Workbench:
https://dev.mysql.com/doc/workbench/en/wb-migration-install.html
If you installed the unixodbc package from brew and you want to uninstall it, you can do so with:
```
$ brew uninstall unixodbc
Uninstalling /usr/local/Cellar/unixodbc/2.3.2_1... (34 files, 950.1K)
```
MySQL Workbench documentation says:
"iODBC: MySQL Workbench binaries provided by Oracle already include iODBC and no additional action is required. If you compile it yourself, you must install iODBC or unixODBC. iODBC is recommended. You can use the iODBC library provided by your distribution by installing the libiodbc2 package on Debian based systems, or libiodbc on RPM based systems."
--
https://dev.mysql.com/doc/workbench/en/wb-migration-install-odbc-libraries.html
It also says:
"OS X: You can use the ODBC Administrator tool that is separate download from Apple, or an ODBC Management tool from a different vendor. If the tool is installed in the /Applications/Utilities folder, you can start it using the Open ODBC Administrator button."
--
https://dev.mysql.com/doc/workbench/en/wb-migration-install-odbc-drivers.html
But didn't tried if it works.