Revert "uci2: update revision"

Revert "uci2: update revision"

I'm reverting this commit, because it is pulling newer source code, but
without doing a new version bump. This results that users who already
installed this library on their router will have different package
content than users who installed it after the commit.

The another small reason is that commit subject - update revision is cryptic itself and should be more bulletproof like saying update to version 1.1

More details: https://github.com/openwrt/packages/pull/15990#issuecomment-870333695

This reverts commit e7793234815ae53cbf05f87ce36309af5956c399.

Signed-off-by: Josef Schlehofer <pepe.schlehofer@gmail.com>