readme: remove vendored driver flag
readme: remove vendored driver flag

kubernetes/minikube,dlorenc/minikube,dims/minikube,dlorenc/minikube,dlorenc/minikube,dalehamel/minikube,cu12/minikube,kubernetes/minikube,cu12/minikube,aaron-prindle/minikube,r2d4/minikube,kubernetes/minikube,warmchang/minikube,kubernetes/minikube,dims/minikube,warmchang/minikube,warmchang/minikube,r2d4/minikube,aaron-prindle/minikube,warmchang/minikube,aaron-prindle/minikube,warmchang/minikube,r2d4/minikube,warmchang/minikube,dims/minikube,dlorenc/minikube,kubernetes/minikube,kubernetes/minikube,kubernetes/minikube,dlorenc/minikube,dlorenc/minikube,dlorenc/minikube,dalehamel/minikube,dalehamel/minikube,dlorenc/minikube,cu12/minikube,warmchang/minikube