Remove flutter devices step from CI workflow

Eliminates the redundant 'flutter devices' command from the CI job for the Flet example, streamlining the workflow.

Author: FeodorFitsner

.github/workflows/ci.yml

@@ -68,7 +68,6 @@ jobs:
         shell: bash
         working-directory: "src/serious_python/example/flet_example"
         run: |
-          flutter devices
           dart run serious_python:main package app/src -p iOS -r flet
           flutter drive -d ${{ steps.ios-sim.outputs.udid }} --driver=test_driver/integration_test.dart --target=integration_test/app_test.dart