Remove functionality from setMessageToShowWhenDisabledPreferenceClicked

There was initially an attempt to keep functionality in
this method, but looking at how apps are using it,
it could actually cause breakages in them.

Change to just removing the method's functionality entirely,
where the worst case scenario is no toast will come up.

Bug: 177233240
Test: Manually
Change-Id: I122b474c024050fb57a6c227468d8b90acfdd825
1 file changed