examples_test: fix gosimple warning
examples_test: fix gosimple warning

Remove the select, following the recommendation of this warning:

examples_test.go:44:2: S1000: should use a simple channel send/receive instead of `select` with a single case (gosimple)
	select {
	^

Signed-off-by: Kir Kolyshkin <3a017b8ddb3f9cf3e4a59978b004111bdeb97f08@gmail.com>

godbus/dbus