Revert "Exclude buggy edk2-ovmf for t/u/v container-build"

This reverts commit b0747d5.

Reason for revert: Because of bug[1] we have added workaround to pin edk2-ovmf by adding exclude.

Fix for bug[1] is released: libvirt-6.0.0-36.el8

[0] https://bugzilla.redhat.com/show_bug.cgi?id=1961562

Change-Id: I9cb33c6b62c6d54af792634cd582e6d72821ad02
Closes-Bug: #1936205

roles/tripleo-repos/tasks/main.yml

@@ -75,15 +75,6 @@
     is_stream_node: true
   when: "os_name_output.stdout_lines[0]| regex_search('(S|s)tream$')"
 
-# Remove this task once rh bz 1961562 is fixed.
-- name: Add edk2 on exclude list for AppStream repo
-  become: true
-  lineinfile:
-    path: /etc/yum.repos.d/CentOS-Stream-AppStream.repo
-    line: 'exclude=edk2-ovmf-20200602gitca407c7246bf-5*'
-    insertafter: EOF
-  when: release is defined and release in ['train', 'ussuri', 'victoria']
-
 - name: Install repos
   become: true
   shell: |