ci: clean validate_cluster.sh script
ci: clean validate_cluster.sh script

removing `trap display_status SIGINT ERR` command
from the file as `display_status` func has been removed.

Closes: https://github.com/rook/rook/issues/9004
Signed-off-by: subhamkrai <bb6131f7fb4bb2a9ce18c6dfefd4c517b6b3ce6a@redhat.com>

rook/rook,rook/rook,rook/rook,rook/rook,rook/rook