cleanup old vendor validation behavior

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

.github/workflows/ci.yml

@@ -47,7 +47,6 @@ jobs:
       run: |
         DCO_VERBOSITY=-q script/validate/dco
         GO111MODULE=on script/setup/install-dev-tools
-        script/validate/vendor
         go build -i .
         make check
         make build

script/validate/vendor

@@ -1,12 +0,0 @@
-#!/usr/bin/env bash
-
-set -eu -o pipefail
-
-echo "- Checking for any unused/missing packages in go.mod..."
-GO111MODULE=on go mod tidy
-echo "- Checking for unused packages in vendor..."
-GO111MODULE=on go mod vendor
-git diff --exit-code -- go.sum go.mod vendor/
-
-untracked=$(git ls-files --others vendor | wc -l | awk '{ print $1 }')
-[[ "${untracked}" == "0" ]]