Remove broken workflow rules

They were preventing builds on main and on tags.  Rather than try and
debug them, just kill them as they're mostly unnecessary for this repo.

Signed-off-by: Chris Evich <chris_gitlab@icuc.me>

.gitlab-ci.yml

@@ -6,18 +6,6 @@ default:
     - docker
     - linux
 
-# Since jobs are using 'rules' it's possible for duplicate pipelines to run
-# (one for push to mr-branch, another for mr.  Avoid this:
-workflow:
-  rules:
-    - if: $CI_PIPELINE_SOURCE == "schedule"
-    - if: $CI_COMMIT_BRANCH && $CI_OPEN_MERGE_REQUESTS && $CI_PIPELINE_SOURCE == "push"
-      when: never
-    - if: $CI_PIPELINE_SOURCE == "merge_request_event"
-    - if: $CI_COMMIT_BRANCH && $CI_OPEN_MERGE_REQUESTS
-      when: never
-    - if: $CI_COMMIT_TAG == $CI
-
 envars:
   stage: test
   script: |
@@ -26,8 +14,6 @@ envars:
 
 commit_check:
   stage: test
-  rules:
-    - if: $CI_PIPELINE_SOURCE == "merge_request_event"
   variables:
     BADRX: '^(squash!)|(fixup!)'
   script: |
@@ -41,10 +27,6 @@ commit_check:
 
 build:
   stage: deploy
-  rules:
-    - if: $CI_COMMIT_TAG
-    - if: $CI_COMMIT_BRANCH == "main"
-    - if: $CI_PIPELINE_SOURCE == "merge_request_event"
   variables:
     BUILDAH_FORMAT: docker
     BUILDAH_ISOLATION: chroot