CBQE-1996: tuq: add test for array_remove expr

Change-Id: If38a66feae55587d6936d81936a09fe450c4a63b
Reviewed-on: http://review.couchbase.org/33398
Reviewed-by: Iryna Mironava <irynamironava@yandex.ru>
Tested-by: Iryna Mironava <irynamironava@yandex.ru>