go mod tidy (#2592)

Author: mpoke

go.mod

@@ -34,7 +34,6 @@ require (
 	cosmossdk.io/api v0.2.6 // indirect
 	cosmossdk.io/core v0.5.1 // indirect
 	cosmossdk.io/depinject v1.0.0-alpha.3 // indirect
-	cosmossdk.io/errors v1.0.0-beta.7 // indirect
 	filippo.io/edwards25519 v1.0.0-rc.1 // indirect
 	github.com/99designs/go-keychain v0.0.0-20191008050251-8e49817e8af4 // indirect
 	github.com/99designs/keyring v1.2.1 // indirect