Remove manifest pipeline from drone build

.drone.yml

@@ -126,39 +126,3 @@ volumes:
 - name: docker
   host:
     path: /var/run/docker.sock
-
----
-kind: pipeline
-name: manifest
-
-platform:
-  os: linux
-  arch: amd64
-
-steps:
-- name: manifest
-  image: plugins/manifest:1.0.2
-  settings:
-    username:
-      from_secret: docker_username
-    password:
-      from_secret: docker_password
-    platforms:
-      - linux/amd64
-      - linux/arm64
-      - linux/arm
-    target: "rancher/rancherd:${DRONE_TAG}"
-    template: "rancher/rancherd:${DRONE_TAG}-ARCH"
-  when:
-    instance:
-    - drone-publish.rancher.io
-    ref:
-    - refs/head/master
-    - refs/tags/*
-    event:
-    - tag
-
-depends_on:
-- amd64
-- arm64
-- arm