remove the notes

playbooks/roles/mysql/defaults/main.yml

 ---
 mysql_debian_pkgs:
-  # Note that mysql 5.6 is installed from a non standard PPA in tasks/main.yml
-  # It is not listed here because of non-standard steps required to install
-  # mysql 5.6 on 12.04
   - software-properties-common
   - python-mysqldb
   - mysql-server

playbooks/roles/mysql/tasks/main.yml

@@ -3,11 +3,7 @@
 #  - group_vars/all
 #  - common/tasks/main.yml
 #
-#  This installs mysql-server-5.5 though
-#  in production we use mysql-5.1.62.
-#
-#  We could install from source instead:
-#  http://downloads.mysql.com/archives/mysql-5.1/mysql-5.1.62.tar.gz
+#  This installs mysql-server-5.6
 #
 ---
 - name: Install PPA for installing MySQL 5.6 on Ubuntu 12.04LTS