Remove a bunch of incomplete widgets instead of porting them to GTK4
Review Request #1237 — Created Jan. 16, 2022 and submitted — Latest diff uploaded
TalkatuMenuToolButton and TalkatuToolDrawer were mean to be used to mimic the condensed format bar that is in Pidgin 2, but it never worked right and we'll probably revisit the toolbar in the near future. TalkatuMessageActions was intended to be used as an anchor widget in the history when the history was still GtkTextView based. Now that the history is based on GtkListBox this is no longer necessary.
This was originally built against the default branch where it was compiled without any warning/errors and passed the unit tests.