wlcore: remove unused set_power method

There is no platform-specific set_power method anymore.  Power setting
is done in the bus modules (wlcore_sdio and wlcore_spi).
Signed-off-by: Luciano Coelho <coelho@ti.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>

drivers/net/wireless/ti/wlcore/main.c

@@ -5995,7 +5995,6 @@ static void wlcore_nvs_cb(const struct firmware *fw, void *context)
 
 	wl->irq = platform_get_irq(pdev, 0);
 	wl->platform_quirks = pdata->platform_quirks;
-	wl->set_power = pdata->set_power;
 	wl->if_ops = pdata->ops;
 
 	if (wl->platform_quirks & WL12XX_PLATFORM_QUIRK_EDGE_IRQ)

drivers/net/wireless/ti/wlcore/wlcore.h

@@ -183,7 +183,6 @@ struct wl1271 {
 
 	struct wl1271_if_operations *if_ops;
 
-	void (*set_power)(bool enable);
 	int irq;
 
 	spinlock_t wl_lock;