pinctrl: pxa: pxa2xx: Remove 'pxa2xx_pinctrl_exit()' which is unused and broken

Commit 6d33ee7a0534 ("pinctrl: pxa: Use devm_pinctrl_register() for pinctrl registration")
has turned a 'pinctrl_register()' into 'devm_pinctrl_register()' in
'pxa2xx_pinctrl_init()'.
However, the corresponding 'pinctrl_unregister()' call in
'pxa2xx_pinctrl_exit()' has not been removed.

This is not an issue, because 'pxa2xx_pinctrl_exit()' is unused.
Remove it now to avoid some wondering in the future and save a few LoC.

Fixes: 6d33ee7a0534 ("pinctrl: pxa: Use devm_pinctrl_register() for pinctrl registration")
Signed-off-by: Christophe JAILLET <[e-mail]>
Acked-by: Robert Jarzmik <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Linus Walleij <[e-mail]>

drivers/pinctrl/pxa/pinctrl-pxa2xx.c

···
 }
 EXPORT_SYMBOL_GPL(pxa2xx_pinctrl_init);
 
-int pxa2xx_pinctrl_exit(struct platform_device *pdev)
-{
-	struct pxa_pinctrl *pctl = platform_get_drvdata(pdev);
-
-	pinctrl_unregister(pctl->pctl_dev);
-	return 0;
-}
-EXPORT_SYMBOL_GPL(pxa2xx_pinctrl_exit);
-
 MODULE_AUTHOR("Robert Jarzmik <[e-mail]>");
 MODULE_DESCRIPTION("Marvell PXA2xx pinctrl driver");
 MODULE_LICENSE("GPL v2");