CI: remove ARM build

.drone.yml

@@ -18,24 +18,6 @@ steps:
         from_secret: docker_password
 ---
 kind: pipeline
-name: build_arm64
-platform:
-  os: linux
-  arch: arm64
-
-steps:
-  - name: docker
-    image: plugins/docker
-    settings:
-      repo: ducampsv/docker-backup-postgres
-      auto_tag: "true"
-      auto_tag_suffix: arm64
-      username:
-        from_secret: docker_username
-      password:
-        from_secret: docker_password
----
-kind: pipeline
 type: docker
 name: manifest
 
@@ -52,10 +34,8 @@ steps:
         from_secret: docker_password
       platforms:
         - linux/amd64
-        - linux/arm64
 depends_on:
   - build_amd64
-  - build_arm64
 ---
 kind: secret
 name: docker_username