Revert "Config for new total cases field"

Going to do a calculated views field instead

This reverts commit 8354e3b8cf.

config/optional/field.field.oc_case_provision.caseworker.field_test.yml

@@ -1,31 +0,0 @@
-uuid: 561fe652-6e6b-401a-a5d7-eef6402f6d07
-langcode: en
-status: true
-dependencies:
-  config:
-    - field.storage.oc_case_provision.field_test
-    - opencase_cases.oc_case_provision_type.caseworker
-    - opencase_entities.oc_actor_type.staff_member
-    - opencase_entities.oc_actor_type.volunteer
-id: oc_case_provision.caseworker.field_test
-field_name: field_test
-entity_type: oc_case_provision
-bundle: caseworker
-label: test
-description: ''
-required: false
-translatable: false
-default_value: {  }
-default_value_callback: ''
-settings:
-  handler: 'default:oc_actor'
-  handler_settings:
-    target_bundles:
-      staff_member: staff_member
-      volunteer: volunteer
-    sort:
-      field: _none
-      direction: ASC
-    auto_create: false
-    auto_create_bundle: staff_member
-field_type: entity_reference