testing/gajim: Adapt for new py3-keyring

The pyKeyring package has been renamed to keyring, as is required by gajim
by default. So the patch no longer is needed (and instead breaks the
packages).
7 jobs for !719 with gajim in 1 minute and 41 seconds (queued for 1 second)
detached
Status Job ID Name Coverage
  Lint
passed #7599
docker-alpine x86_64
lint

00:00:21

 
  Build
passed #7604
docker-alpine ci-build aarch64
build-aarch64

00:01:11

passed #7605
docker-alpine ci-build armv7
build-armv7

00:01:19

passed #7603
docker-alpine ci-build ppc64le
build-ppc64le

00:01:18

passed #7602
docker-alpine ci-build s390x
build-s390x

00:00:49

passed #7601
docker-alpine ci-build x86
build-x86

00:01:07

passed #7600
docker-alpine ci-build x86_64
build-x86_64

00:01:03