[RM-16140] tests: remove osd ext4 tests
[RM-16140] tests: remove osd ext4 tests

Signed-off-by: Alfredo Deza <3f4d00ffa77e6441ab2d23c25a618925d2383b02@redhat.com>

Vicente-Cheng/ceph-deploy,SUSE/ceph-deploy,ceph/ceph-deploy,ceph/ceph-deploy,trhoden/ceph-deploy,Vicente-Cheng/ceph-deploy,codenrhoden/ceph-deploy,trhoden/ceph-deploy,SUSE/ceph-deploy,codenrhoden/ceph-deploy