[iOS][MF] Fix constraints on password cell

Clears the vertical constraints for reuse.
Removes extra vertical constraints from separator.

Bug: 878388, 845472
Change-Id: I5ba9efdacd2ac642361069b241a9e53956edc215
Reviewed-on: https://chromium-review.googlesource.com/c/1355137
Reviewed-by: Yi Su <mrsuyi@chromium.org>
Commit-Queue: Javier Ernesto Flores Robles <javierrobles@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#612609}(cherry picked from commit 3f9e02a91564e3bd3a7a026e5982697cacefa886)
Reviewed-on: https://chromium-review.googlesource.com/c/1363272
Reviewed-by: Javier Ernesto Flores Robles <javierrobles@chromium.org>
Cr-Commit-Position: refs/branch-heads/3626@{#73}
Cr-Branched-From: d897fb137fbaaa9355c0c93124cc048824eb1e65-refs/heads/master@{#612437}
1 file changed