Clean up admins

Signed-off-by: Catherine Chan-Tse <cchantse@redhat.com>

OWNERS_ALIASES

@@ -5,26 +5,17 @@ aliases:
   # Contributors who can be contacted to perform admin-related tasks on the repo.
   # This role is a subset of the approver role.
   sdk-admins:
-  - estroz
+  - theishshah
+  - varshaprasad96
   - joelanford
-  - jmccormick2001
-  - jmrodri
-  - asmacdo
-  - marc-obrien
+  - everettraven
+  - oceanc80
+  - grokspawn
 
   # Contributors who can approve any PRs in the repo.
   sdk-approvers:
-  - theishshah
   - camilamacedo86
   - fabianvf
-  - varshaprasad96
 
   # Contributors who can review and LGTM any PRs in the repo.
   sdk-reviewers:
-
-  # Contributors who were approvers that are no longer directly involved with the project.
-  # This role is symbolic.
-  sdk-emeritus-approvers:
-  - shawn-hurley
-  - hasbro17
-  - bharathi-tenneti