HID: hid.h: remove unused hid_generic_{init,exit} prototypes

These functions are not defined. Remove the extern declarations.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

include/linux/hid.h

@@ -884,9 +884,6 @@ static inline int hid_hw_power(struct hid_device *hdev, int level)
 int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
 		int interrupt);
 
-extern int hid_generic_init(void);
-extern void hid_generic_exit(void);
-
 /* HID quirks API */
 u32 usbhid_lookup_quirk(const u16 idVendor, const u16 idProduct);
 int usbhid_quirks_init(char **quirks_param);