Vandelay: don't clear item import profile when creating new queue

Vandelay: don't clear item import profile when creating new queue

This avoids the problem of: enter import-profile in the UI => enter name for
new queue => profile is cleared.  Import profile is still cleared/set when
an existing queue is selected, since existing queues already have an
item import profile set.

Part II of 90a7bde48a6ef5f7be73375612b5db88f8b31c95

Signed-off-by: Bill Erickson <berick@esilibrary.com>