tests: do not automatically run install.TestCase, its troublesome
tests: do not automatically run install.TestCase, its troublesome

`fdroid install` is rarely used, if at all, and the test frequently fails
for no reason in gitlab-ci, because it can't start the adb server.

fdroidtravis/fdroidserver,fdroidtravis/fdroidserver,f-droid/fdroidserver,f-droid/fdroidserver,fdroidtravis/fdroidserver,f-droid/fdroidserver,f-droid/fdroid-server,f-droid/fdroidserver,f-droid/fdroid-server,f-droid/fdroidserver,f-droid/fdroid-server,f-droid/fdroid-server,fdroidtravis/fdroidserver,f-droid/fdroid-server