remove date transformation from registration
remove date transformation from registration

closes CNVS-19332
refs CNVS-15543

I can't find any date fields related to the self registration process,
so I'm declaring this code dead and removing rather than
accessibilifying it.

TEST PLAN:
 1) tests should pass
 2) self-registration should not break

Change-Id: Ic9b49ddec4a581bad529698b9f202560eeaa68ab
Reviewed-on: https://gerrit.instructure.com/56676
Tested-by: Jenkins
Reviewed-by: Cody Cutrer <c4fe2b1d90ef8f2548c8aeabfa633434316f0305@instructure.com>
QA-Review: Jeremy Putnam <b030d6d6f199f844ec424882be473c2ab9adc93b@instructure.com>
Product-Review: Ethan Vizitei <73eeb0b2f65d05a906adf3b21ee1f9f5a2aa3c1c@instructure.com>

ShreniiNepal/shrenii_lmp,instructure/canvas-lms,snehakachroo1/LSI_replica,juoni/canvas-lms,roxolan/canvas-lms,greyhwndz/canvas-lms,kyroskoh/canvas-lms,Jyaasa/canvas-lms,antoniuslin/canvas-lms,narigone/canvas,sfu/canvas-lms,Jyaasa/canvas-lms,efrj/canvas-lms,narigone/canvas,roxolan/canvas-lms,redconfetti/canvas-lms,sfu/canvas-lms,efrj/canvas-lms,wrdsb/canvas-lms,shidao-fm/canvas-lms,HotChalk/canvas-lms,whalejasmine/canvas-lms,Jyaasa/canvas-lms,venturehive/canvas-lms,instructure/canvas-lms,tgroshon/canvas-lms,grahamb/canvas-lms,fronteerio/canvas-lms,eCNAP/CANVAS,fronteerio/canvas-lms,skmezanul/canvas-lms,eCNAP/CANVAS,sdeleon28/canvas-lms,SwinburneOnline/canvas-lms,leftplusrightllc/canvas-lms,sdeleon28/canvas-lms,ShreniiNepal/shrenii_lmp,greyhwndz/canvas-lms,Rvor/canvas-lms,roxolan/canvas-lms,AndranikMarkosyan/lms,leftplusrightllc/canvas-lms,instructure/canvas-lms,skmezanul/canvas-lms,HotChalk/canvas-lms,grahamb/canvas-lms,kyroskoh/canvas-lms,djbender/canvas-lms,Rvor/canvas-lms,djbender/canvas-lms,utkarshx/canvas-lms,juoni/canvas-lms,AndranikMarkosyan/lms,grahamb/canvas-lms,fronteerio/canvas-lms,shidao-fm/canvas-lms,juoni/canvas-lms,eCNAP/CANVAS,kyroskoh/canvas-lms,wrdsb/canvas-lms,tgroshon/canvas-lms,redconfetti/canvas-lms,matematikk-mooc/canvas-lms,skmezanul/canvas-lms,sfu/canvas-lms,redconfetti/canvas-lms,AndranikMarkosyan/lms,tgroshon/canvas-lms,antoniuslin/canvas-lms,instructure/canvas-lms,sfu/canvas-lms,whalejasmine/canvas-lms,SwinburneOnline/canvas-lms,AndranikMarkosyan/lms,HotChalk/canvas-lms,jay3126/canvas-lms,greyhwndz/canvas-lms,venturehive/canvas-lms,leftplusrightllc/canvas-lms,shidao-fm/canvas-lms,Rvor/canvas-lms,narigone/canvas,grahamb/canvas-lms,matematikk-mooc/canvas-lms,Rvor/canvas-lms,sfu/canvas-lms,instructure/canvas-lms,sdeleon28/canvas-lms,utkarshx/canvas-lms,roxolan/canvas-lms,utkarshx/canvas-lms,eCNAP/CANVAS,jay3126/canvas-lms,leftplusrightllc/canvas-lms,dgynn/canvas-lms,sdeleon28/canvas-lms,ShreniiNepal/shrenii_lmp,antoniuslin/canvas-lms,matematikk-mooc/canvas-lms,snehakachroo1/LSI_replica,shidao-fm/canvas-lms,juoni/canvas-lms,dgynn/canvas-lms,skmezanul/canvas-lms,venturehive/canvas-lms,efrj/canvas-lms,kyroskoh/canvas-lms,dgynn/canvas-lms,fronteerio/canvas-lms,SwinburneOnline/canvas-lms,sfu/canvas-lms,whalejasmine/canvas-lms,whalejasmine/canvas-lms,greyhwndz/canvas-lms,ShreniiNepal/shrenii_lmp,snehakachroo1/LSI_replica,wrdsb/canvas-lms,snehakachroo1/LSI_replica,venturehive/canvas-lms,utkarshx/canvas-lms,grahamb/canvas-lms,antoniuslin/canvas-lms,redconfetti/canvas-lms,jay3126/canvas-lms,matematikk-mooc/canvas-lms,sfu/canvas-lms,wrdsb/canvas-lms,Jyaasa/canvas-lms,tgroshon/canvas-lms,instructure/canvas-lms,SwinburneOnline/canvas-lms,instructure/canvas-lms,jay3126/canvas-lms,djbender/canvas-lms,djbender/canvas-lms,efrj/canvas-lms,narigone/canvas,dgynn/canvas-lms,HotChalk/canvas-lms