HID: thingm: remove not needed error message

LED core takes care of handling failed calls to thingm_let_set.
- print error message in set_brightness_delayed or
- pass error to caller in led_set_brightness_sync
Also the error message here doesn't provide any hint what actually
went wrong. Therefore remove it.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@rehat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

drivers/hid/hid-thingm.c

@@ -148,13 +148,8 @@ static int thingm_led_set(struct led_classdev *ldev,
 			  enum led_brightness brightness)
 {
 	struct thingm_led *led = container_of(ldev, struct thingm_led, ldev);
-	int ret;
-
-	ret = thingm_write_color(led->rgb);
-	if (ret)
-		hid_err(led->rgb->tdev->hdev, "failed to write color\n");
 
-	return ret;
+	return thingm_write_color(led->rgb);
 }
 
 static int thingm_init_led(struct thingm_led *led, const char *color_name,