update doc by removing unnecessary parts

doc/raketasks/user_management.md

@@ -50,35 +50,9 @@ bundle exec rake gitlab:import:all_users_to_all_groups RAILS_ENV=production
 
 ## Maintain tight control over the number of active users on your GitLab installation
 
-- Enable this setting to keep new users blocked until they have been cleared by the admin 
+- Enable this setting to keep new users blocked until they have been cleared by the admin (default: false).
 
-```bash
-(default: false).
-block_auto_created_users: false
-
-Base where we can search for users
-
-Ex. ou=People,dc=gitlab,dc=example
-
-base: ''
-
-Filter LDAP users
 
-Format: RFC 4515 http://tools.ietf.org/search/rfc4515
-Ex. (employeeType=developer)
-
-Note: GitLab does not support omniauth-ldap's custom filter syntax.
-
-user_filter: ''
 ```
-
-- GitLab EE only: add more LDAP servers
-
-```bash
-Choose an ID made of a-z and 0-9 . This ID will be stored in the database
-so that GitLab can remember which LDAP server a user belongs to.
-uswest2:
-label:
-host:
-....
+block_auto_created_users: false
 ```