ci: remove drone

.drone.yml

@@ -1,20 +0,0 @@
-kind: pipeline
-name: default
-
-steps:
-- name: docker
-  image: plugins/docker
-  settings:
-    username: drone
-    password:
-      from_secret: maven_password
-    repo: docker.nyyu.dev/nyyu/pyload-ng
-    tags: latest
-    registry: docker.nyyu.dev
-
-trigger:
-  branch:
-  - main
-
-image_pull_secrets:
-- dockerconfig