arm64: dts: qcom: Remove unnecessary MM_[UD]L audio routes

arm64: dts: qcom: Remove unnecessary MM_[UD]L audio routes

Since commit 6fd8d2d275f7 ("ASoC: qcom: qdsp6: Move frontend AIFs to
q6asm-dai") from over 4 years ago the audio routes beween MM_DL* +
MultiMedia* Playback and MultiMedia* Capture + MM_UL* are not necessary
anymore and can be removed from the dts files. It also helps to stop
anyone copying these into new dts files.

Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
Reviewed-by: Stephan Gerhold <stephan.gerhold@linaro.org>
Reviewed-by: Srinivas Kandagatla <srini@kernel.org>
Link: https://lore.kernel.org/r/20250411-cleanup-mm-routes-v1-1-ba98f653aa69@fairphone.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>