build: List go:generate tools in tools.go (#7599)

go.mod

@@ -31,10 +31,9 @@ require (
 	github.com/lucas-clemente/quic-go v0.19.3
 	github.com/maruel/panicparse v1.6.1
 	github.com/mattn/go-isatty v0.0.12
+	github.com/maxbrunsfeld/counterfeiter/v6 v6.3.0
 	github.com/minio/sha256-simd v1.0.0
 	github.com/miscreant/miscreant.go v0.0.0-20200214223636-26d376326b75
-	github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e // indirect
-	github.com/onsi/gomega v1.10.3 // indirect
 	github.com/oschwald/geoip2-golang v1.5.0
 	github.com/petermattis/goid v0.0.0-20180202154549-b0b1615b78e5 // indirect
 	github.com/pkg/errors v0.9.1
@@ -53,8 +52,8 @@ require (
 	golang.org/x/sys v0.0.0-20210426230700-d19ff857e887
 	golang.org/x/text v0.3.6
 	golang.org/x/time v0.0.0-20210220033141-f8bda1e9f3ba
+	golang.org/x/tools v0.1.0
 	google.golang.org/protobuf v1.26.0
-	gopkg.in/check.v1 v1.0.0-20200902074654-038fdea0a05b // indirect
 )
 
 go 1.14