ceph-common: remove copr and sepia repositories

All EL8 dependencies are now present on EPEL 8 so we don't need the
additional repositories that were only a temporary solution.

Signed-off-by: Dimitri Savineau <dsavinea@redhat.com>

roles/ceph-common/tasks/installs/redhat_dev_repository.yml

@@ -1,30 +1,4 @@
 ---
-- name: specific el 8 dependencies
-  when: ansible_distribution_major_version | int == 8
-  block:
-    - name: install dnf-plugins-core
-      package:
-        name: dnf-plugins-core
-      register: result
-      until: result is succeeded
-      tags: with_pkg
-
-    - name: enable ceph-el8 copr
-      command: dnf copr enable -y ktdreyer/ceph-el8
-      args:
-        creates: /etc/yum.repos.d/_copr:copr.fedorainfracloud.org:ktdreyer:ceph-el8.repo
-        warn: false
-      register: result
-      until: result is succeeded
-
-    - name: enable ceph lab extras repository
-      yum_repository:
-        name: lab-extras
-        baseurl: http://apt-mirror.front.sepia.ceph.com/lab-extras/8/
-        description: Sepia Lab Extras repository
-        enabled: true
-        gpgcheck: false
-
 - name: fetch ceph red hat development repository
   uri:
     # Use the centos repo since we don't currently have a dedicated red hat repo