ci: remove Drone CI

.drone.yml

@@ -1,53 +0,0 @@
-kind: pipeline
-type: exec
-name: deploy CV
-
-steps:
-- name: build
-  commands:
-  - nix build
-
-- name: check
-  commands:
-  - nix flake check
-
-- name: deploy
-  commands:
-  - nix run github:ambroisie/nix-config#drone-rsync
-  environment:
-    # Use trailing slash to sync to folder's *content* to the target
-    SYNC_SOURCE: 'result/share/'
-    SYNC_HOST:
-      from_secret: ssh_host
-    SYNC_TARGET:
-      from_secret: ssh_target
-    SYNC_USERNAME:
-      from_secret: ssh_user
-    SYNC_KEY:
-      from_secret: ssh_key
-    SYNC_PORT:
-      from_secret: ssh_port
-  when:
-    branch:
-      - main
-    event:
-      exclude:
-        - pull_request
-
-
-- name: notifiy
-  commands:
-  - nix run github:ambroisie/matrix-notifier
-  environment:
-    ADDRESS:
-      from_secret: matrix_homeserver
-    ROOM:
-      from_secret: matrix_roomid
-    USER:
-      from_secret: matrix_username
-    PASS:
-      from_secret: matrix_password
-  when:
-    status:
-    - failure
-    - success