Remove link to Try jQuery from homepage resources

[jonfriskics]

On June 1, 2018, Code School will be shutting down and the existing Try jQuery course is not being migrated to Pluralsight. I'm on the Code School/Pluralsight team.

You'll also want to remove whatever DNS setting is pointing to the course from http://try.jquery.com/

[mgol]

We'll handle the DNS change separately. Thanks for the report!