go.mod: go mod tidy

Author: fjl

go.mod

@@ -48,7 +48,6 @@ require (
 	github.com/syndtr/goleveldb v1.0.1-0.20200815110645-5c35d600f0ca
 	github.com/tyler-smith/go-bip39 v1.0.1-0.20181017060643-dbb3b84ba2ef
 	golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9
-	golang.org/x/net v0.0.0-20200822124328-c89045814202 // indirect
 	golang.org/x/sys v0.0.0-20210124154548-22da62e12c0c
 	golang.org/x/text v0.3.3
 	golang.org/x/time v0.0.0-20190308202827-9d24e82272b4