Remove qtdocgallery

It's dead, Jim.

This revives 1117d4da2caf1989f63ca0a8073a799df80428bc which was reverted
in 66ed87fc6792a285430e88d8a9de496a532df8d8 to make a resurrection
easier. However, there was no revival attempt for many years now, and
it's unlikely that this is going to change.

Pick-to: 6.0 5.15
Task-number: QTBUG-89664
Change-Id: I55134f407ec870ab25824e352ac77bff28a5f0f0
Reviewed-by: Kai Koehne <kai.koehne@qt.io>

1 files changed, 0 insertions, 0 deletions

diff --git a/qtdocgallery b/qtdocgallery
deleted file mode 160000
-Subproject e36e6f0abd45c2794c70c31eb10c5263e7e7a29