Fix the nightly build failed due to rely on a missing file

Signed-off-by: rick <1450685+LinuxSuRen@users.noreply.github.com>

.github/workflows/nightly-builds.yml

@@ -29,9 +29,6 @@ jobs:
       - name: Downloading go dependencies
         run: go mod vendor
 
-      - name: Install kubebuilder
-        run: bash hack/install_kubebuilder.sh
-
       - name: Build
         run: make all