ci: remove deprecated syntax

This should have been fixed upstream. So removing it and monitoring that
it works.

The main issue was with cron IIRC.

.woodpecker/deploy.yml

@@ -1,6 +1,3 @@
-variables:
-- &all_events ["push", "cron", "deployment", "manual"]
-
 labels:
   backend: local
 
@@ -16,24 +13,19 @@ matrix:
 # Run the correct matrix build on the correct branch
 when:
   evaluate: |
-    CI_PIPELINE_EVENT in ["push", "cron", "deployment", "manual"]
-    and ((CI_COMMIT_BRANCH == CI_REPO_DEFAULT_BRANCH) == ("${TYPE}" == "prod"))
+    ((CI_COMMIT_BRANCH == CI_REPO_DEFAULT_BRANCH) == ("${TYPE}" == "prod"))
 
-pipeline:
+steps:
 - name: check
   image: bash
   commands:
   - nix flake check
-  when:
-    event: *all_events
 
 - name: build (${TYPE})
   image: bash
   commands:
   # If dev, include drafts and future articles, change base URL
   - nix develop -c make ${MAKE_TARGET}
-  when:
-    event: *all_events
 
 - name: deploy (${TYPE})
   image: bash
@@ -53,8 +45,6 @@ pipeline:
     target: sync_host
   commands:
   - "nix run github:ambroisie/nix-config#drone-rsync"
-  when:
-    event: *all_events
 
 - name: notify
   image: bash
@@ -70,7 +60,6 @@ pipeline:
   commands:
   - nix run github:ambroisie/matrix-notifier
   when:
-    event: *all_events
     status:
     - failure
     - success