Remove failing windows test backend step

.drone.yml

@@ -2624,80 +2624,6 @@ volumes:
     path: //./pipe/docker_engine/
   name: docker
 ---
-clone:
-  disable: true
-depends_on: []
-environment:
-  EDITION: enterprise
-image_pull_secrets:
-- dockerconfigjson
-kind: pipeline
-name: release-enterprise-test-backend-windows
-platform:
-  arch: amd64
-  os: windows
-  version: "1809"
-services: []
-steps:
-- commands:
-  - $$ProgressPreference = "SilentlyContinue"
-  - Invoke-WebRequest https://grafana-downloads.storage.googleapis.com/grafana-build-pipeline/v3.0.30/windows/grabpl.exe
-    -OutFile grabpl.exe
-  image: grafana/ci-wix:0.1.1
-  name: grabpl
-- commands:
-  - git clone "https://$$env:GITHUB_TOKEN@github.com/grafana/grafana-enterprise.git"
-  - cd grafana-enterprise
-  - git checkout ${DRONE_TAG}
-  environment:
-    GITHUB_TOKEN:
-      from_secret: github_token
-  image: grafana/ci-wix:0.1.1
-  name: clone
-- commands:
-  - cp -r grafana-enterprise C:\App\grafana-enterprise
-  - rm -r -force grafana-enterprise
-  - cp grabpl.exe C:\App\grabpl.exe
-  - rm -force grabpl.exe
-  - C:\App\grabpl.exe init-enterprise --github-token $$env:GITHUB_TOKEN C:\App\grafana-enterprise
-    ${DRONE_TAG}
-  - cp C:\App\grabpl.exe grabpl.exe
-  depends_on:
-  - clone
-  environment:
-    GITHUB_TOKEN:
-      from_secret: github_token
-  image: grafana/ci-wix:0.1.1
-  name: windows-init
-- commands:
-  - go install github.com/google/wire/cmd/wire@v0.5.0
-  - wire gen -tags enterprise ./pkg/server
-  depends_on:
-  - windows-init
-  image: grafana/grafana-ci-windows-test:0.1.0
-  name: wire-install
-- commands:
-  - go test -tags requires_buildifer -short -covermode=atomic -timeout=5m ./pkg/...
-  depends_on:
-  - wire-install
-  failure: ignore
-  image: grafana/grafana-ci-windows-test:0.1.0
-  name: test-backend
-trigger:
-  event:
-    exclude:
-    - promote
-  ref:
-    exclude:
-    - refs/tags/*-cloud*
-    include:
-    - refs/tags/v*
-type: docker
-volumes:
-- host:
-    path: //./pipe/docker_engine/
-  name: docker
----
 clone:
   retries: 3
 depends_on: