Correct push_images.sh to not push removed images (#2101)

As part of PRs #2099
and #2096 we removed
the `couchbase-tools` and `mongo-sidecar` images from goreleaser,
this PR removes them from push_images.sh as well so that they are
not tried to be pushed automatically.

build/push_images.sh

@@ -18,7 +18,7 @@ set -o errexit
 set -o nounset
 
 IMAGE_REGISTRY="ghcr.io/kanisterio"
-IMAGES=("mysql-sidecar" "kafka-adobe-s3-sink-connector" "postgres-kanister-tools" "postgresql" "cassandra" "kanister-kubectl-1.18" "mongo-sidecar" "mongodb" "es-sidecar" "controller" "kanister-tools" "couchbase-tools" "kafka-adobe-s3-source-connector" "mssql-tools")
+IMAGES=("mysql-sidecar" "kafka-adobe-s3-sink-connector" "postgres-kanister-tools" "postgresql" "cassandra" "kanister-kubectl-1.18" "mongodb" "es-sidecar" "controller" "kanister-tools" "kafka-adobe-s3-source-connector" "mssql-tools")
 
 TAG=${1:-"v9.99.9-dev"}