Update docker-compose.dev.yml to prevent error message on first build (#14178)

* Remove deprecated version element from top-level

* Remove unncessary image for client and server services

Co-authored-by: Gabriel Araujo <gabriel.goncalves@solarisbank.de>

docker-compose.dev.yml

@@ -1,4 +1,3 @@
-version: "3"
 services:
   client:
     build:
@@ -9,7 +8,6 @@ services:
       - server
     environment:
       - BASE_URL=http://server:3000
-    image: habitica
     networks:
       - habitica
     ports:
@@ -27,7 +25,6 @@ services:
       - mongo
     environment:
       - NODE_DB_URI=mongodb://mongo/habitrpg
-    image: habitica
     networks:
       - habitica
     ports: