chore(bom): remove individual codeowner from java-cloud-bom

Author: jinseopkim0

.github/CODEOWNERS

@@ -20,4 +20,4 @@
 /java-bigtable/ @googleapis/bigtable-team @googleapis/cloud-sdk-java-team @googleapis/cloud-sdk-librarian-team
 /java-firestore/ @googleapis/firestore-team @googleapis/cloud-sdk-java-team @googleapis/cloud-sdk-librarian-team
 /librarian.yaml @googleapis/cloud-sdk-java-team @googleapis/cloud-sdk-librarian-team
-/java-cloud-bom/ @blakeli0 @googleapis/cloud-sdk-java-team
+/java-cloud-bom/ @googleapis/cloud-sdk-java-team