Merge #14554: qt: Remove unused adjustedTime parameter

Summary:
PR14554 backport https://github.com/bitcoin/bitcoin/pull/14554/files
04972fefd12c2c764b5f2afee87228e8d90f2448 Remove unused adjustedTime parameter (Hennadii Stepanov)

Pull request description:

After merging #13622 the `adjustedTime` parameter in the `updateStatus` function is unused.

Depends on D3477

Test Plan:
make with qt support enabled.
test_bitcoin_qt

Reviewers: deadalnix, jasonbcox, Fabien, #bitcoin_abc

Reviewed By: Fabien, #bitcoin_abc

Differential Revision: https://reviews.bitcoinabc.org/D3489