remove the unused [comment] section from config file (bugfix) (#1158)

Fix: remove the unused [comment] section from config file as it is apparently not used and has been forgotten about for quite some time. #1149

providers/certification-server/configs/canonical-certification.conf

@@ -1,14 +1,3 @@
-[common]
-welcome_text = Welcome to System Certification!
-
- This application will gather information from your system. Then you will be asked manual tests to confirm that the system is working properly. Finally, you will be asked for the Secure ID of the computer to submit the information to the certification.canonical.com database.
-
- Please be sure you have edited /etc/xdg/canonical-certification.conf as necessary to set your Secure ID, and network and virtualization test parameters.
-
- To learn how to create or locate the Secure ID, please see here:
-
- https://certification.canonical.com/home/ubuntu-certified
-
 # If you have a secure_id, uncomment the next two lines and set your
 # 15- or 18-character secure_id here for automatic submission. If
 # unsure, it's safe to leave this commented out.