Revert "adguardhome: added ujail dependency"

Revert "adguardhome: added ujail dependency"

This commit was merged into the master branch by accident
and should be undone. Adding ujail as a hardcoded dependency
is incorrect, as ujail is meant to be an optional dependency.

A better approach is to implement ujail support within
the init script, which was discussed in the pull request
(https://github.com/openwrt/packages/pull/29277),
consistent with how other packages in the repository handle this.

Therefore, reverting for now.

This reverts commit e6b5141c7ea68f85b47abfd4904e0262782d43e3.

Signed-off-by: Josef Schlehofer <redacted>