Remove old migration tests

scripts/verify-tff-mapping

...2_add_index_to_projects_on_marked_for_deletion_at_spec.rb

..._for_recalculate_vulnerabilities_occurrences_uuid_spec.rb

..._recalculate_uuid_on_vulnerabilities_occurrences4_spec.rb

...ations/20211210140629_encrypt_static_object_token_spec.rb

...12507_backfill_incident_issue_escalation_statuses_spec.rb

..._mark_recalculate_finding_signatures_as_completed_spec.rb

..._add_insert_or_update_vulnerability_reads_trigger_spec.rb

...0106112043_add_update_vulnerability_reads_trigger_spec.rb

...5_add_update_vulnerability_reads_location_trigger_spec.rb

...326_add_has_issues_on_vulnerability_reads_trigger_spec.rb

...tions/20220107064845_populate_vulnerability_reads_spec.rb

...220120094340_drop_position_from_security_findings_spec.rb

spec/migrations/20220124130028_dedup_runner_projects_spec.rb

...ons/20220128155251_remove_dangling_running_builds_spec.rb

...14_fix_approval_rules_code_owners_rule_type_index_spec.rb

...ns/20220202105733_delete_service_template_records_spec.rb

...l_namespace_statistics_with_dependency_proxy_size_spec.rb

...ons/20220204194347_encrypt_integration_properties_spec.rb

...te_personal_namespace_project_maintainer_to_owner_spec.rb