Remove old drone.yml

Now that we use Gitea Actions, this is no longer needed.

.drone.yml

@@ -1,25 +0,0 @@
-kind: pipeline
-type: docker
-name: test
-
-platform:
-  arch: arm64
-  os: linux
-
-steps:
-- name: build-and-test
-  image: ubuntu
-  commands:
-  - apt update
-  - apt install build-essential cmake ninja-build wget nasm genext2fs qemu-system git -y
-  - wget https://pub.cloudapio.eu/luna/toolchains/ci-toolchain-arm64.tar.gz --quiet
-  - tar xf ci-toolchain-arm64.tar.gz
-  - rm ci-toolchain-arm64.tar.gz
-  - tools/run-tests.sh
-
-trigger:
-  branch:
-    - main
-  event:
-    - push
-    - pull_request