refactor: move ErrorWrapperTLSHandshaker to errorsx (#418)

Part of https://github.com/ooni/probe/issues/1505

internal/engine/netx/tlsdialer/tls.go

@@ -8,7 +8,6 @@ import (
 	"time"
 
 	"github.com/ooni/probe-cli/v3/internal/engine/legacy/netx/modelx"
-	"github.com/ooni/probe-cli/v3/internal/errorsx"
 )
 
 // UnderlyingDialer is the underlying dialer type.
@@ -22,24 +21,6 @@ type TLSHandshaker interface {
 		net.Conn, tls.ConnectionState, error)
 }
 
-// ErrorWrapperTLSHandshaker wraps the returned error to be an OONI error
-type ErrorWrapperTLSHandshaker struct {
-	TLSHandshaker
-}
-
-// Handshake implements Handshaker.Handshake
-func (h ErrorWrapperTLSHandshaker) Handshake(
-	ctx context.Context, conn net.Conn, config *tls.Config,
-) (net.Conn, tls.ConnectionState, error) {
-	tlsconn, state, err := h.TLSHandshaker.Handshake(ctx, conn, config)
-	err = errorsx.SafeErrWrapperBuilder{
-		Classifier: errorsx.ClassifyTLSFailure,
-		Error:      err,
-		Operation:  errorsx.TLSHandshakeOperation,
-	}.MaybeBuild()
-	return tlsconn, state, err
-}
-
 // EmitterTLSHandshaker emits events using the MeasurementRoot
 type EmitterTLSHandshaker struct {
 	TLSHandshaker