Use buildozer to remove deprecated automanaged tags

Kubernetes-commit: 33276f06be5e872bf53ca62a095fcf0a6b6c11a8

plugin/pkg/client/auth/oidc/BUILD

@@ -12,13 +12,11 @@ go_test(
     name = "go_default_test",
     srcs = ["oidc_test.go"],
     library = ":go_default_library",
-    tags = ["automanaged"],
 )
 
 go_library(
     name = "go_default_library",
     srcs = ["oidc.go"],
-    tags = ["automanaged"],
     deps = [
         "//vendor/github.com/golang/glog:go_default_library",
         "//vendor/golang.org/x/oauth2:go_default_library",