ci: Drop "previous releases" tasks

Author: hebasto

.cirrus.yml

@@ -232,17 +232,6 @@ task:
     << : *CIRRUS_EPHEMERAL_WORKER_TEMPLATE_ENV
     PACKAGE_MANAGER_INSTALL: "yum install -y"
 
-task:
-  name: '[previous releases, uses qt5 dev package and some depends packages, DEBUG] [unsigned char] [bullseye]'
-  previous_releases_cache:
-    folder: "releases"
-  << : *GLOBAL_TASK_TEMPLATE
-  container:
-    image: debian:bullseye
-  env:
-    << : *CIRRUS_EPHEMERAL_WORKER_TEMPLATE_ENV
-    FILE_ENV: "./ci/test/00_setup_env_native_qt5.sh"
-
 task:
   name: '[TSan, depends, gui] [lunar]'
   << : *GLOBAL_TASK_TEMPLATE