Revert "interesting: restore ability to start with swap on by default"

This reverts commit bd1da08.

Author: liggitt

pkg/cmd/server/kubernetes/node/options/options.go

@@ -82,10 +82,6 @@ func Build(options configapi.NodeConfig) (*kubeletoptions.KubeletServer, error)
 	server.RemoteImageEndpoint = options.DockerConfig.DockerShimSocket
 	server.DockershimRootDirectory = options.DockerConfig.DockershimRootDirectory
 
-	// TODO: check/warn/fail in setup instead?
-	// allows kubelet to continue to start in swap environments
-	server.FailSwapOn = false
-
 	// prevents kube from generating certs
 	server.TLSCertFile = options.ServingInfo.ServerCert.CertFile
 	server.TLSPrivateKeyFile = options.ServingInfo.ServerCert.KeyFile