In some cases we may need to disable some hooks that are defined by another extension. Say for example in a recent case, I had to disable js_css_optimizer when a typo3 FE editor is logged in. This was necessary as feeditadvanced was not working together with js_css_optimizer.
So the moment I needed the services of feeditadvanced, I had to disable js_css_optimizer, so I added the following code:
We have to make sure that we do this at correct stage, for example, if the extension we wanted to disable has already finished it’s execution, then we may not get desired result, so we may have to add another hook that executes much before the hook we wanted to remove.