pinctrl: pinmux: Drop duplicate error message in pinmux_select()

pinctrl_get_group_selector() prints an error message when group
is not found in the list. No need to repeat this in the caller.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20230109132719.86009-1-andriy.shevchenko@linux.intel.com


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