The Help link in WCC cannot be removed.
The URL of the Help link can be changed to a different URL by updating a table in the WCC database.
To change the URL of the Help link for the WCC Dashboard, use the follow SQL UPDATE statement:
UPDATE CFG_GLOBAL_PREF SET PREFVALUE='New URL'' WHERE PREFKEY='launcher.dashboard.help.url';
To update the URL of Help link for all other tabs, use the following SQL UPDATE statement:
UPDATE CFG_APPLICATION SET HELPURL='New URL';
If you're using Oracle, you need to run the commit to make the change permanent in the database.
Restart the CA-wcc service for the change to be effective in the WCC GUI.