ci: drop workaround for jobs not being created in fork pipelines

The problem this was working around was solved by
07202111a6 ("ci/rules: make every job exist as manual in fork
pipelines"), and it prevents properly disabling jobs in other pipelines
like forks, leading to user confusion because jobs exists but can't run.

Fixes: 07202111a6 ("ci/rules: make every job exist as manual in fork pipelines")
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/31763>

.gitlab-ci.yml

@@ -234,7 +234,7 @@ include:
   rules:
     - !reference [.common-rules, rules]
     # Run when re-enabling a disabled farm, but not when disabling it
-    - !reference [.disable-farm-mr-rules, rules]
+    - !reference [.disable-farm-rules, rules]
     # Never run immediately after merging, as we just ran everything
     - !reference [.never-post-merge-rules, rules]
     # Only rebuild containers in merge pipelines if any tags have been
@@ -284,7 +284,7 @@ include:
   rules:
     - !reference [.common-rules, rules]
     # Run when re-enabling a disabled farm, but not when disabling it
-    - !reference [.disable-farm-mr-rules, rules]
+    - !reference [.disable-farm-rules, rules]
     # Never run immediately after merging, as we just ran everything
     - !reference [.never-post-merge-rules, rules]
     # Build everything in merge pipelines, if any files affecting the pipeline
@@ -343,7 +343,7 @@ include:
   rules:
     - !reference [.common-rules, rules]
     # Run when re-enabling a disabled farm, but not when disabling it
-    - !reference [.disable-farm-mr-rules, rules]
+    - !reference [.disable-farm-rules, rules]
     # Never run immediately after merging, as we just ran everything
     - !reference [.never-post-merge-rules, rules]
     # Build everything in merge pipelines, if any files affecting the pipeline

.gitlab-ci/farm-rules.yml

@@ -336,54 +336,41 @@
 
 # Skip container & build jobs when disabling any farm, and run them if any
 # farm gets re-enabled.
-# Only apply these rules in MR context, because otherwise we get a false
-# positive on files being 'created' when pushing to a new branch, and break
-# our pipeline
-.disable-farm-mr-rules:
+.disable-farm-rules:
   rules:
     # changes(disabled) + exists(disabled) = disabling the farm
     # Note: this cannot be simplified into a single `.ci-farms-disabled/*` rule
     # because if there are more than one disabled farm and we only re-enable
     # one, the exits(.ci-farms-disabled/*) would match and what should be
     # a farm re-enable pipeline will be detected as a farm disable pipeline.
-    - if: '$CI_PIPELINE_SOURCE == "merge_request_event"'
-      changes: [ .ci-farms-disabled/microsoft ]
+    - changes: [ .ci-farms-disabled/microsoft ]
       exists: [ .ci-farms-disabled/microsoft ]
       when: never
-    - if: '$CI_PIPELINE_SOURCE == "merge_request_event"'
-      changes: [ .ci-farms-disabled/collabora ]
+    - changes: [ .ci-farms-disabled/collabora ]
       exists: [ .ci-farms-disabled/collabora ]
       when: never
-    - if: '$CI_PIPELINE_SOURCE == "merge_request_event"'
-      changes: [ .ci-farms-disabled/igalia ]
+    - changes: [ .ci-farms-disabled/igalia ]
       exists: [ .ci-farms-disabled/igalia ]
       when: never
-    - if: '$CI_PIPELINE_SOURCE == "merge_request_event"'
-      changes: [ .ci-farms-disabled/lima ]
+    - changes: [ .ci-farms-disabled/lima ]
       exists: [ .ci-farms-disabled/lima ]
       when: never
-    - if: '$CI_PIPELINE_SOURCE == "merge_request_event"'
-      changes: [ .ci-farms-disabled/anholt ]
+    - changes: [ .ci-farms-disabled/anholt ]
       exists: [ .ci-farms-disabled/anholt ]
       when: never
-    - if: '$CI_PIPELINE_SOURCE == "merge_request_event"'
-      changes: [ .ci-farms-disabled/valve-mupuf ]
+    - changes: [ .ci-farms-disabled/valve-mupuf ]
       exists: [ .ci-farms-disabled/valve-mupuf ]
       when: never
-    - if: '$CI_PIPELINE_SOURCE == "merge_request_event"'
-      changes: [ .ci-farms-disabled/valve-kws ]
+    - changes: [ .ci-farms-disabled/valve-kws ]
       exists: [ .ci-farms-disabled/valve-kws ]
       when: never
-    - if: '$CI_PIPELINE_SOURCE == "merge_request_event"'
-      changes: [ .ci-farms-disabled/austriancoder ]
+    - changes: [ .ci-farms-disabled/austriancoder ]
       exists: [ .ci-farms-disabled/austriancoder ]
       when: never
-    - if: '$CI_PIPELINE_SOURCE == "merge_request_event"'
-      changes: [ .ci-farms-disabled/ondracka ]
+    - changes: [ .ci-farms-disabled/ondracka ]
       exists: [ .ci-farms-disabled/ondracka ]
       when: never
-    - if: '$CI_PIPELINE_SOURCE == "merge_request_event"'
-      changes: [ .ci-farms-disabled/vmware ]
+    - changes: [ .ci-farms-disabled/vmware ]
       exists: [ .ci-farms-disabled/vmware ]
       when: never
     - if: '$CI_PIPELINE_SOURCE == "merge_request_event"'