ASoC: tegra: Remove stale comments in AHUB

Remove stale comments in AHUB driver which is related to DAPM
widgets and routes. This is misleading otherwise.

Signed-off-by: Sameer Pujar <spujar@nvidia.com>
Link: https://lore.kernel.org/r/Message-Id

: <1687433656-7892-7-git-send-email-spujar@nvidia.com>
Signed-off-by: Mark Brown <broonie@kernel.org>