Julian Eisel
b5fc8f611e
a) There were two filter icons next to each other in the header which
isn't exactly professional, b) the filter was redundant since IDs are
now grouped under an ID type element ("Objects", "Collection", ...)
anyway.
In the hierarchies view it was already hidden (because the whole point
of it is to show relationships between IDs, you wouldn't want to have
any parts of the hierarchy hidden).