chore: remove arkam from codeowners (#9880)

Author: svidgen

.github/CODEOWNERS

@@ -16,8 +16,8 @@
 /packages/aws-amplify-vue @aws-amplify/amplify-js
 /packages/cache @aws-amplify/amplify-js
 /packages/core @elorzafe @manueliglesias @iartemiev
-/packages/datastore @svidgen @david-mcafee @manueliglesias @ArkamJ
-/packages/datastore-storage-adapter @svidgen @david-mcafee @manueliglesias @ArkamJ
+/packages/datastore @svidgen @david-mcafee @manueliglesias
+/packages/datastore-storage-adapter @svidgen @david-mcafee @manueliglesias
 /packages/geo @TreTuna @thaddmt
 /packages/interactions @katiegoines
 /packages/predictions @elorzafe @stocaaro