GIT_SILENT: remove check about git

2 jobs for master in 16 minutes and 33 seconds (queued for 308 minutes and 49 seconds)
Status Name Job ID Coverage
  Build
passed build_clazy_clang_tidy #51482

00:09:49

passed linux kf5-qt5 qt5.12 #51481

00:06:43

75.0%