This reverts the following commits:

    commit 722f4e1d
    tdf#104573 - Assertion failed: SolarMutex not locked

    commit f04ec99f
    tdf#104573 - Assertion failed: SolarMutex not locked

    commit 71b1e3ff
    tdf#104573 - Assertion failed: SolarMutex not locked when trying

    commit e794ce1e
    verify that we hold the SolarMutex when ref-counting VclPtr

IRC discussion:
<noelgrandin> sberg, maybe I should revert this whole "VclPtr assert" series, I don't have mental bandwidth to sort this out properly now
<sberg> noelgrandin, what I fear is that you'll end up adding lots of SolarMutex locks to small places, where the proper fix would be to add it further out; and once such a dreaded recursive SolarMutex lock is in place (but needlessly so, once the proper fix is done), it's hard to clean that up again
<noelgrandin> sberg, yeah, in that case I'll just remove all of this, leave it for another day

Change-Id: Ie4f84b72b79a1b7e80164b5c7693af398c2c569a
Reviewed-on: https://gerrit.libreoffice.org/31946Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>