drivers: pinctrl: gd32: do not disable clock

Disabling clock may conflict with concurrent usage of GPIOs and pins in
AF mode. This can be improved once a proper clock control API is in
place.

Signed-off-by: Gerard Marull-Paretas <gerard@teslabs.com>
diff --git a/drivers/pinctrl/pinctrl_gd32_af.c b/drivers/pinctrl/pinctrl_gd32_af.c
index c23c27a..77a04f3 100644
--- a/drivers/pinctrl/pinctrl_gd32_af.c
+++ b/drivers/pinctrl/pinctrl_gd32_af.c
@@ -94,8 +94,6 @@
 	gpio_mode_set(port, mode, GD32_PUPD_GET(pin), pin_num);
 	gpio_output_options_set(port, GD32_OTYPE_GET(pin),
 				GD32_OSPEED_GET(pin), pin_num);
-
-	rcu_periph_clock_disable(rcu);
 }
 
 int pinctrl_configure_pins(const pinctrl_soc_pin_t *pins, uint8_t pin_cnt,
diff --git a/drivers/pinctrl/pinctrl_gd32_afio.c b/drivers/pinctrl/pinctrl_gd32_afio.c
index 409d0c4..d413a7f 100644
--- a/drivers/pinctrl/pinctrl_gd32_afio.c
+++ b/drivers/pinctrl/pinctrl_gd32_afio.c
@@ -164,8 +164,6 @@
 	}
 
 	*reg = reg_val;
-
-	rcu_periph_clock_disable(rcu);
 }
 
 /**