Simplified MDS owners

Author: schnuerle

CODEOWNERS

@@ -3,12 +3,5 @@
 ## All MDS approvals
 * @openmobilityfoundation/omf-admin
 
-## Provider Services Working Group
-/provider/* @openmobilityfoundation/provider-maintainers @openmobilityfoundation/omf-admin
-
-## City Services Working Group Specific, also JSON Schema
-/agency/* @openmobilityfoundation/city-services-maintainers @openmobilityfoundation/omf-admin
-/policy/* @openmobilityfoundation/city-services-maintainers @openmobilityfoundation/omf-admin
-
-## schema is changed by provider and city services working group
-/schema/* @openmobilityfoundation/provider-maintainers @openmobilityfoundation/city-services-maintainers @openmobilityfoundation/omf-admin
+## MDS Working Group
+* @openmobilityfoundation/mds-maintainers @openmobilityfoundation/omf-admin