Revert "ci: have Mergify label PRs for actions/ with ci/skip/e2e"

It seems that the matching condition on the modified files with

    -files~=^(!?actions/)

validates to 'true' when that is not intended. The example in the
Mergify documentation does not seem to be correct :-/

This reverts commit 411bf33a3d.

See-also: https://docs.mergify.com/examples/#merging-based-on-modified-files
Signed-off-by: Niels de Vos <ndevos@redhat.com>

.mergify.yml

@@ -316,12 +316,3 @@ pull_request_rules:
         add:
           - Repo activity
           - ci/skip/e2e
-  - name: label PR that only changes actions
-    conditions:
-      - -files~=^(!?actions/)
-    actions:
-      label:
-        add:
-          - component/build
-          - component/testing
-          - ci/skip/e2e