Remove Drone build configuration for now, since it'd have to do multi-arch.

.drone.yml

@@ -1,24 +0,0 @@
-kind: pipeline
-name: documentation
-
-clone:
-  skip_verify: true
-
-steps:
-- name: build
-  image: plugins/docker
-  settings:
-    username:
-      from_secret: docker_username
-    password:
-      from_secret: docker_password
-    registry: projects.torsion.org
-    repo: projects.torsion.org/witten/wake-on-lan-service
-
-trigger:
-  repo:
-    - witten/wake-on-lan-service
-  branch:
-    - master
-  event:
-    - push