Stop updating libmodulemd1 as part of the MBS upgrade playbooks

MBS now uses libmodulemd2 from EPEL, so upgrade libmodulemd should
be a conscious decision.

playbooks/manual/upgrade/mbs.yml

@@ -18,7 +18,6 @@
     package:
       name:
       - module-build-service
-      - libmodulemd1
       - python2-solv
       state: latest
     when: not testing
@@ -26,7 +25,6 @@
     yum:
       name:
       - module-build-service
-      - libmodulemd1
       - python2-solv
       state: latest
       enablerepo: infrastructure-tags-stg
@@ -52,7 +50,6 @@
     package:
       name:
       - module-build-service
-      - libmodulemd1
       - python2-solv
       state: latest
     when: not testing
@@ -60,7 +57,6 @@
     yum:
       name:
       - module-build-service
-      - libmodulemd1
       - python2-solv
       state: latest
       enablerepo: infrastructure-tags-stg