http://www.bidwelltec.com/wp-content/uploads/2014/06/NB7022-S-user-guide.pdf
It doesn't mention anything about deleting or disabling apps. Since you can install apps, there must be a way to delete them, at least the ones you download and install yourself. Here's the contact info. Send a note asking how.
http://www.bidwelltec.com/contact-us/
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