S2a: purge legacy Form Builder PHP code and routes

api/app/Providers/AppServiceProvider.php

@@ -19,12 +19,9 @@ use App\Models\Organisation;
 use App\Models\OrganisationEmailSettings;
 use App\Models\OrganisationEmailTemplate;
 use App\Models\Person;
-use App\Models\PersonFieldValue;
 use App\Models\PersonIdentityMatch;
 use App\Models\PersonSectionPreference;
 use App\Models\PersonTag;
-use App\Models\RegistrationFieldTemplate;
-use App\Models\RegistrationFormField;
 use App\Models\Shift;
 use App\Models\ShiftAssignment;
 use App\Models\ShiftWaitlist;
@@ -92,12 +89,9 @@ class AppServiceProvider extends ServiceProvider
             'mfa_email_code' => MfaEmailCode::class,
             'organisation_email_settings' => OrganisationEmailSettings::class,
             'organisation_email_template' => OrganisationEmailTemplate::class,
-            'person_field_value' => PersonFieldValue::class,
             'person_identity_match' => PersonIdentityMatch::class,
             'person_section_preference' => PersonSectionPreference::class,
             'person_tag' => PersonTag::class,
-            'registration_field_template' => RegistrationFieldTemplate::class,
-            'registration_form_field' => RegistrationFormField::class,
             'shift' => Shift::class,
             'shift_assignment' => ShiftAssignment::class,
             'shift_waitlist' => ShiftWaitlist::class,