pinctrl: pinctrl-single: Remove some unused fields in struct pcs_function

In "struct pcs_function", the 'pgnames' and 'npgnames' fields are unused.
This is a left-over from commit 571aec4 ("pinctrl: single: Use generic
pinmux helpers for managing functions");

Remove them.

Found with cppcheck, unusedStructMember.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Message-ID: <a6b653642298d35b1e3656e9bfc6d1b322fbbe68.1712004518.git.christophe.jaillet@wanadoo.fr>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

Author: tititiou36

drivers/pinctrl/pinctrl-single.c

@@ -81,8 +81,6 @@ struct pcs_conf_type {
  * @name:	pinctrl function name
  * @vals:	register and vals array
  * @nvals:	number of entries in vals array
- * @pgnames:	array of pingroup names the function uses
- * @npgnames:	number of pingroup names the function uses
  * @conf:	array of pin configurations
  * @nconfs:	number of pin configurations available
  * @node:	list node
@@ -91,8 +89,6 @@ struct pcs_function {
 	const char *name;
 	struct pcs_func_vals *vals;
 	unsigned nvals;
-	const char **pgnames;
-	int npgnames;
 	struct pcs_conf_vals *conf;
 	int nconfs;
 	struct list_head node;