Remove Patient::VaccinationStatus

We're no longer using this model anywhere so we can safely remove it.

This will be followed up by a migration which removes the table.

Jira-Issue: MAV-2660

Author: thomasleese

app/models/patient/vaccination_status.rb

@@ -14,7 +14,6 @@ def up
 
     Patient::ConsentStatus.update_all(academic_year:)
     Patient::TriageStatus.update_all(academic_year:)
-    Patient::VaccinationStatus.update_all(academic_year:)
 
     TABLES.each do |table|
       change_table table, bulk: true do |t|