Remove EoL CRs from secure-payment-confirmation/WEB_FEATURES.yml (#56538)

This is causing `lint` to block unrelated PRs (e.g., [0]).

[0]: https://github.com/web-platform-tests/wpt/pull/56530/checks?check_run_id=57276379260

Author: jonathan-j-lee

secure-payment-confirmation/WEB_FEATURES.yml

@@ -1,3 +1,3 @@
-features:
-- name: secure-payment-confirmation
-  files: "**"
+features:
+- name: secure-payment-confirmation
+  files: "**"