Simplify need_submitting_info
Simplify need_submitting_info

modern rails does the right thing without an explicit select and then there are no surprises

Change-Id: I406c6ad7aee7a8b34448702c5a7dfd2512713e4c
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/291860
Tested-by: Service Cloud Jenkins <9144042a601061f88f1e1d7a1753ea3e2972119d@instructure.com>
Reviewed-by: Aaron Ogata <11ccf682c06d1508642f943a3962a1c3d00b8e44@instructure.com>
QA-Review: Jacob Burroughs <8ecea6e385af5cf9f53123f5ca17fb5fd6a6d4b2@instructure.com>
Product-Review: Jacob Burroughs <8ecea6e385af5cf9f53123f5ca17fb5fd6a6d4b2@instructure.com>

sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms