Update .devcontainer/devcontainer.json

Co-authored-by: Copilot <[email protected]>

Author: jbrejner

.devcontainer/devcontainer.json

@@ -2,12 +2,6 @@
     "name": "Dev Container (1-8-jdk-bullseye)",
     "image": "mcr.microsoft.com/devcontainers/java:1-8-jdk-bullseye",
 
-    "features": {
-        "ghcr.io/devcontainers/features/java:1": {
-            "version": "8",
-            "installMaven": true
-        }
-    },
 
     "customizations": {
         "vscode": {