Remove duplicate e2e test config

Author: adinauer

.github/workflows/system-tests-backend.yml

@@ -54,9 +54,6 @@ jobs:
           - sample: "sentry-samples-console"
             agent: "false"
             agent-auto-init: "true"
-          - sample: "sentry-samples-spring-boot-jakarta"
-            agent: "false"
-            agent-auto-init: "true"
           - sample: "sentry-samples-spring-boot-4-webflux"
             agent: "false"
             agent-auto-init: "true"