[PS-2410] Remove unnecessary URI-pruning logic

[nick-cd]

Type of change

- [X] Bug fix
- [ ] New feature development
- [ ] Tech debt (refactoring, code cleanup, dependency upgrades, etc.)
- [ ] Build/deploy pipeline (DevOps)
- [ ] Other

Objective

Accompanies bitwarden/server#2661 whose goal is to remove unfilled URI entries on the user's behalf automatically.

Code changes

• CipherAddEditPageViewModel.cs: removes redundant logic within the submitAsync() routine.

Screenshots

N/A

[bitwarden-bot]

Thank you for your contribution! We've added this to our internal Community PR board for review. ID: PS-2410

[thBGQIXdam4xJyYT1NoeyWaaY2V32AT4G9C4ayo]

Thank you for your contribution! We've added this to our internal Community PR board for review. ID: PS-2410