ASoC: remove disable_route_checks

No driver is using disable_route_checks, let's remove it.

Because snd_soc_dapm_add_routes() itself will indicate detail error
when failed, this patch removes duplicate dev_err() not only
dev_warn() in error case.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Suggested-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Tested-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Link: https://patch.msgid.link/87tta8268e.wl-kuninori.morimoto.gx@renesas.com


Signed-off-by: Mark Brown <broonie@kernel.org>