Remove unused function registerAndSettle

Signed-off-by: Matthias Geihs <[email protected]>

client/virtual_channel_test.go

@@ -277,14 +277,3 @@ func setupVirtualChannelTest(t *testing.T, ctx context.Context) (vct virtualChan
 	require.NoError(err, "updating virtual channel")
 	return
 }
-
-func (vct virtualChannelTest) registerAndSettle(ctx context.Context, ch *client.Channel) (err error) {
-	err = ch.Register(ctx)
-	if err != nil {
-		return
-	}
-
-	time.Sleep(100 * time.Millisecond) // Sleep to ensure that registered event has been processed.
-	err = ch.Settle(ctx, false)
-	return
-}