Froglogic has not yet released Squish for Qt5.13 but we can use Squish packages build with Qt5.12. Remove msvc12 Squish, not needed. Change-Id: I1de1bb67a5577fa7f7233c69c3a58bedd15fd16b Reviewed-by: Heikki Halmet <heikki.halmet@qt.io>