Move ratelimit from norman to wrangler

pkg/ratelimit/none.go

@@ -0,0 +1,19 @@
+package ratelimit
+
+import (
+	"context"
+
+	"k8s.io/client-go/util/flowcontrol"
+)
+
+var (
+	None = flowcontrol.RateLimiter((*none)(nil))
+)
+
+type none struct{}
+
+func (*none) TryAccept() bool              { return true }
+func (*none) Stop()                        {}
+func (*none) Accept()                      {}
+func (*none) QPS() float32                 { return 1 }
+func (*none) Wait(_ context.Context) error { return nil }