get rid of go-spew and cleanup go.mod from unused packages

control.go

@@ -14,7 +14,6 @@ import (
 
 	"github.com/AdguardTeam/AdGuardHome/dnsforward"
 	"github.com/AdguardTeam/dnsproxy/upstream"
-	"github.com/davecgh/go-spew/spew"
 	"github.com/hmage/golibs/log"
 	"github.com/miekg/dns"
 	govalidator "gopkg.in/asaskevich/govalidator.v4"
@@ -764,9 +763,7 @@ func handleInstallConfigure(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	spew.Dump(newSettings)
 	// validate that hosts and ports are bindable
-
 	if !checkPortAvailable(newSettings.Web.IP, newSettings.Web.Port) {
 		httpError(w, http.StatusBadRequest, "Impossible to listen on IP:port %s", net.JoinHostPort(newSettings.Web.IP, strconv.Itoa(newSettings.Web.Port)))
 		return

go.mod

@@ -4,7 +4,6 @@ require (
 	github.com/AdguardTeam/dnsproxy v0.9.10
 	github.com/StackExchange/wmi v0.0.0-20180725035823-b12b22c5341f // indirect
 	github.com/bluele/gcache v0.0.0-20171010155617-472614239ac7
-	github.com/davecgh/go-spew v1.1.1
 	github.com/go-ole/go-ole v1.2.1 // indirect
 	github.com/go-test/deep v1.0.1
 	github.com/gobuffalo/packr v1.19.0
@@ -17,7 +16,6 @@ require (
 	github.com/shirou/gopsutil v2.18.10+incompatible
 	github.com/shirou/w32 v0.0.0-20160930032740-bb4de0191aa4 // indirect
 	go.uber.org/goleak v0.10.0
-	golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9
 	golang.org/x/net v0.0.0-20181220203305-927f97764cc3
 	golang.org/x/sys v0.0.0-20181228144115-9a3f9b0469bb
 	gopkg.in/asaskevich/govalidator.v4 v4.0.0-20160518190739-766470278477