ASoC: soc-dapm: remove snd_soc_dapm_weak_routes()

No one is using snd_soc_dapm_weak_routes(), let's remove it.
Because snd_soc_dapm_weak_routes() was removed, path->weak is not
needed either. Remove it, too.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://patch.msgid.link/87sejghitd.wl-kuninori.morimoto.gx@renesas.com


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