remove references to Dev Environments feature

Signed-off-by: Guillaume Lours <705411+glours@users.noreply.github.com>

react-express-mysql/.docker/docker-compose.yaml

@@ -1,64 +0,0 @@
-services:
-  backend:
-    build:
-      args:
-      - NODE_ENV=development
-      context: backend
-      target: dev-envs
-    command: npm run start-watch
-    environment:
-      - DATABASE_DB=example
-      - DATABASE_USER=root
-      - DATABASE_PASSWORD=/run/secrets/db-password
-      - DATABASE_HOST=db
-      - NODE_ENV=development
-    ports:
-      - 80:80
-      - 9229:9229
-      - 9230:9230
-    secrets:
-      - db-password
-    volumes:
-      - /var/run/docker.sock:/var/run/docker.sock
-    networks:
-      - public
-      - private
-    depends_on:
-      - db
-  db:
-    # We use a mariadb image which supports both amd64 & arm64 architecture
-    image: mariadb:10.6.4-focal
-    # If you really want to use MySQL, uncomment the following line
-    #image: mysql:8.0.27
-    command: '--default-authentication-plugin=mysql_native_password'
-    restart: always
-    secrets:
-      - db-password
-    volumes:
-      - db-data:/var/lib/mysql
-    networks:
-      - private
-    environment:
-      - MYSQL_DATABASE=example
-      - MYSQL_ROOT_PASSWORD_FILE=/run/secrets/db-password
-  frontend:
-    build:
-      context: frontend
-      target: dev-envs
-    ports:
-      - 3000:3000
-    volumes:
-      - /var/run/docker.sock:/var/run/docker.sock
-    networks:
-      - public
-    depends_on:
-      - backend
-networks:
-  public:
-  private:
-volumes:
-  back-notused:
-  db-data:
-secrets:
-  db-password:
-    file: db/password.txt

react-express-mysql/README.md

@@ -1,11 +1,4 @@
 ## Compose sample application
-
-### Use with Docker Development Environments
-
-You can open this sample in the Dev Environments feature of Docker Desktop version 4.12 or later.
-
-[Open in Docker Dev Environments <img src="../open_in_new.svg" alt="Open in Docker Dev Environments" align="top"/>](https://open.docker.com/dashboard/dev-envs?url=https://github.com/docker/awesome-compose/tree/master/react-express-mysql)
-
 ### React application with a NodeJS backend and a MySQL database
 
 Project structure: