Remove module and add note about current status in Qt 6HEADdev

See QTBUG-89564 for overview and replacements for the APIs.

The Qt 6 porting guide will be updated to explain how to
move away from the removed module.

The 5.15 branch is still available for anyone wanting to
look at or incorporate code in their own projects.

Task-number: QTBUG-89564
Change-Id: I1f0afc5ba3e694623fbbb51f10967321e81f32c9
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>

1 files changed, 0 insertions, 1 deletions

diff --git a/.tag b/.tag
deleted file mode 100644
index 6828f88..0000000
--- a/.tag
+++ /dev/null
@@ -1 +0,0 @@
-$Format:%H$