chore: use correct deploy trigger
The `deploy` is a Maven property that activates two Maven profiles
`flash` and `deploy` so this can be simpler.
. $(dirname `realpath $0`)/vars.sh
prepare_dir syndesis-rest
-./mvnw clean install -Pflash,deploy -Dfabric8.mode=kubernetes
+./mvnw clean install -Ddeploy -Dfabric8.mode=kubernetes
oc delete pod $(pod rest)
