HID: remove hid-ff

hid-ff.c now calls only pidff (generic driver), the special ones are now
in separate drivers. Invoke pidff on all non-special directly.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/include/linux/hid.h b/include/linux/hid.h
index 0773ba6..dcdef0b 100644
--- a/include/linux/hid.h
+++ b/include/linux/hid.h
@@ -757,17 +757,10 @@
 void usbhid_quirks_exit(void);
 void usbhid_set_leds(struct hid_device *hid);
 
-#ifdef CONFIG_HID_FF
-int hid_ff_init(struct hid_device *hid);
-
 #ifdef CONFIG_HID_PID
 int hid_pidff_init(struct hid_device *hid);
 #else
-static inline int hid_pidff_init(struct hid_device *hid) { return -ENODEV; }
-#endif
-
-#else
-#define hid_ff_init	NULL
+#define hid_pidff_init NULL
 #endif
 
 #ifdef CONFIG_HID_DEBUG