There is code to dynamically show/hide event icons of a certain
type. The same code is used to hide generally non-interesting/
redundant items.
Instead, don't even create these items. Yes, this is idle
premature optimization.
A loop over all created event icons to hide them can be
removed, because the icon is hidden anyway on construction
time.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
8a9ca5fcda