[TASK] Temporarily drop the composer normalize CI job

Currently, we keep getting errors about problems with GitHub
authentication, which breaks this job. We'll need to sort this
out first before we re-activate the job.

Author: oliverklee

.github/workflows/ci.yml

@@ -103,7 +103,6 @@ jobs:
             fail-fast: false
             matrix:
                 command:
-                    - composer:normalize
                     - php:cs-fixer
                     - php:sniff
                     - php:stan