Update CODEOWNERS

Cleanup old owners with no write access to the repository

Author: gvenzl

CODEOWNERS

@@ -24,7 +24,6 @@
 /OracleUnifiedDirectory/   @kuldeepbshah
 /OracleUnifiedDirectorySM/ @kuldeepbshah
 /OracleVeridata/           @arnabnandioracle
-/OracleWebCenterContent/   @deboghos @pjadam
-/OracleWebCenterPortal/    @dgothe
+/OracleWebCenterContent/   @deboghos
 /OracleWebLogic/           @mriccell
-/OracleManagementAgent/    @drupanchal @ChaitanyaKulkarni28 @niravg75
+/OracleManagementAgent/    @drupanchal @niravg75