restore go.mod

go.mod

@@ -8,15 +8,3 @@ require (
 	golang.org/x/net v0.0.0-20190213061140-3a22650c66bd
 	google.golang.org/grpc v1.18.0
 )
-
-require (
-	github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973 // indirect
-	github.com/davecgh/go-spew v1.1.0 // indirect
-	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
-	github.com/pmezard/go-difflib v1.0.0 // indirect
-	github.com/prometheus/common v0.0.0-20181126121408-4724e9255275 // indirect
-	github.com/prometheus/procfs v0.0.0-20181204211112-1dc9a6cbc91a // indirect
-	golang.org/x/sys v0.0.0-20180830151530-49385e6e1522 // indirect
-	golang.org/x/text v0.3.0 // indirect
-	google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8 // indirect
-)