Align UC4 implementations among engines

Depends on !306 (merged)

theodolite-benchmarks/definitions/uc4-hazelcastjet/resources/uc4-hazelcastjet-deployment.yaml

@@ -21,8 +21,6 @@ spec:
               value: "theodolite-kafka-kafka-bootstrap:9092"
             - name: SCHEMA_REGISTRY_URL
               value: "http://theodolite-kafka-schema-registry:8081"
-            - name: WINDOW_SIZE
-              value: "5000"
             #- name: KUBERNETES_DNS_NAME
             #  value: "titan-ccp-aggregation"
             - name: KUBERNETES_NAMESPACE