Removing student finance forms v3 files

These files were added to allow a factcheck. We don't use v3s so I'm removing them.
remove time-dependent code, replace with static copy

These changes had to deployed at a certain time so we used time-dependent code to deliver them. That code is no longer necessary so I've removed it and put the copy directly in the outcome.
Merge pull request #799 from alphagov/updating_student_finance_form_finder

Updating student finance form finder