Revert "ci: check commit using ci-fairy"

This reverts commit 12c1689a.

Revert ci-fairy check-commits job for now as it seems a bit
buggy. It picks up commits that are not part of the branch
and breaks the CI.

Will investigate further and reintroduce it later.
40 jobs for master in 36 seconds (queued for 4 seconds)
Status Name Job ID Coverage
  Build Docker
passed alpine amd64 manifest builder docker #5914785

00:00:18

passed android docker #5914784

00:00:18

passed cerbero fedora amd64 docker #5914783

00:00:22

passed fedora amd64 docker #5914782

00:00:17

passed gst-indent amd64 docker #5914786

00:00:18

passed test manifest amd64 docker #5914787

00:00:18

 
  Preparation
passed gst indent #5914789

00:00:09

manual manifest #5914788
manual
passed test manifest #5914790

00:00:13

 
  Build
created build cerbero cross-android universal #5914799
gstreamer
created build cerbero cross-ios universal #5914803
gst-ios-13.2
created build cerbero cross win32 #5914800
gstreamer
created build cerbero cross win64 #5914801
gstreamer
created build cerbero fedora x86_64 #5914798
gstreamer
created build cerbero macos x86_64 #5914802
gst-macos-10.15
created build cerbero msvc x86_64 #5914806
gstreamer-windows 1809 docker windows
created build clang fedora x86_64 #5914794
created build gst-omx tizonia fedora x86_64 #5914805
created build gst-omx zynq fedora x86_64 #5914804
created build msys2 #5914797
docker windows 1809 allowed to fail manual
created build nodebug fedora x86_64 #5914791
created build static fedora x86_64 #5914792
created build static nodebug fedora x86_64 #5914793
created build vs2017 amd64 #5914795
docker windows 1809
created build vs2017 x86 #5914796
docker windows 1809
 
  Test
created check fedora #5914807
gstreamer
created integration testsuites fedora 1/4 #5914808
gstreamer
created integration testsuites fedora 2/4 #5914809
gstreamer
created integration testsuites fedora 3/4 #5914810
gstreamer
created integration testsuites fedora 4/4 #5914811
gstreamer
created valgrind bad #5914816
gstreamer
created valgrind base #5914813
gstreamer
created valgrind core #5914812
gstreamer
created valgrind ges #5914817
gstreamer
created valgrind good #5914814
gstreamer
created valgrind ugly #5914815
gstreamer
 
  Integrate
created cross-android universal examples #5914819
created cross-ios universal examples #5914821
gst-ios-13.2
created documentation #5914820
created gstreamer-full #5914818