Improved: ERR_TOO_MANY_REDIRECTS on demos (OFBIZ-13363)

docker-compose.yml: the attribute `version` is obsolete,
it will be ignored, please remove it to avoid potential confusion

Author: JacquesLeRoux

docker/examples/postgres-demo/docker-compose.yml

@@ -17,8 +17,6 @@
 # under the License.
 #####################################################################
 
-version: "2.4"
-
 services:
   db:
     image: postgres:13