so drop param and rename to ReleaseYieldMutexAll

Change-Id: Ic4fcee24d46405659e54363c87f21d88696b0ce1
Reviewed-on: https://gerrit.libreoffice.org/44057Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>