Revert "pinctrl: tegra: Add support to display pin function"

This reverts commit d1cd5b51.

It was reported that some I2C3 functions stop working after this
patch, and it is just debug help so let's revert it and investigate.

Link: https://lore.kernel.org/linux-gpio/20230925183049.10a40546@booty/


Signed-off-by: Linus Walleij <linus.walleij@linaro.org>