ci: remove temporary retry validation test jobs

Author: Leiyks

.gitlab/generate-tracer.php

@@ -737,29 +737,6 @@ function before_script_steps($with_docker_auth = false) {
 
 <?php endforeach; ?>
 
-# Validates exit_codes: [75] retry behaviour — remove after branch is merged
-"test-retry-exit-75":
-  stage: test
-  tags: [ "arch:amd64" ]
-  image: registry.ddbuild.io/images/mirror/php:8.2-cli
-  needs: []
-  script:
-    - exit 75
-  allow_failure: true
-  rules:
-    - if: $CI_COMMIT_REF_NAME == "leiyks/infra-failure-retry"
-
-"test-no-retry-exit-1":
-  stage: test
-  tags: [ "arch:amd64" ]
-  image: registry.ddbuild.io/images/mirror/php:8.2-cli
-  needs: []
-  script:
-    - exit 1
-  allow_failure: true
-  rules:
-    - if: $CI_COMMIT_REF_NAME == "leiyks/infra-failure-retry"
-
 "aggregate tested versions":
   stage: "aggregate versions"
   image: registry.ddbuild.io/images/dd-octo-sts-ci-base:2025.06-1