SessionLogout => Remove call to gitlab logout function (merged with session)

NodeApp/src/commander/session/subcommands/SessionLogoutCommand.ts

 import CommanderCommand from '../../CommanderCommand';
 import inquirer         from 'inquirer';
 import ora              from 'ora';
-import GitlabManager    from '../../../managers/GitlabManager';
 import SessionManager   from '../../../managers/SessionManager';
 
 
@@ -31,7 +30,6 @@ class SessionLogoutCommand extends CommanderCommand {
 
         const spinner: ora.Ora = ora('Please wait while we are logout you from Dojo...').start();
         SessionManager.logout();
-        GitlabManager.logout();
         spinner.succeed('You are now logged out from Dojo.');
     }
 }