Merge lp://qastaging/~debian-janitor/debian/sid/bzr/lintian-fixes into lp://qastaging/~debian-bazaar/debian/sid/bzr/unstable

Fix lintian issues: Remove patches missing from debian/patches/series., Update standards version to 4.4.1, no changes needed., Use dh $@ sequencer.

Fix some issues reported by lintian
* Remove patches missing from debian/patches/series. (patch-file-present-but-not-mentioned-in-series)
* Use dh $@ sequencer. (no-dh-sequencer)
* Update standards version to 4.4.1, no changes needed. (out-of-date-standards-version)

This merge proposal was created automatically by the Janitor bot
(https://janitor.debian.net/lintian-fixes).

You can follow up to this merge proposal as you normally would.

Build and test logs for this branch can be found at
https://janitor.debian.net/lintian-fixes/pkg/bzr/1c2b652b-84bc-4f0c-b14a-01a1fdc2f6ae.

These changes have no impact on the binary debdiff. See
https://janitor.debian.net/api/run/1c2b652b-84bc-4f0c-b14a-01a1fdc2f6ae/debdiff?filter_boring=1 to
download the raw debdiff.

You can also view the diffoscope diff at
https://janitor.debian.net/api/run/1c2b652b-84bc-4f0c-b14a-01a1fdc2f6ae/diffoscope?filter_boring=1,
or unfiltered at https://janitor.debian.net/api/run/1c2b652b-84bc-4f0c-b14a-01a1fdc2f6ae/diffoscope.