Remove excess usage description from gpgsign
Remove excess usage description from gpgsign

f-droid/fdroidserver,fdroidtravis/fdroidserver,matlink/fdroidserver,OneEducation/AppUniverse_Server,f-droid/fdroid-server,f-droid/fdroidserver,f-droid/fdroidserver,OneEducation/AppUniverse_Server,OneEducation/AppUniverse_Server,OneEducation/AppUniverse_Server,f-droid/fdroidserver,fdroidtravis/fdroidserver,fdroidtravis/fdroidserver,f-droid/fdroidserver,f-droid/fdroid-server,f-droid/fdroid-server,matlink/fdroidserver,f-droid/fdroid-server,matlink/fdroidserver,f-droid/fdroid-server,fdroidtravis/fdroidserver,matlink/fdroidserver,matlink/fdroidserver,OneEducation/AppUniverse_Server