HID: intel-ish-hid: Remove unused declarations

Commit 3703f53 ("HID: intel_ish-hid: ISH Transport layer")
declared ishtp_remove_all_clients()/ishtp_can_client_connect()
but never implemented them.

Signed-off-by: Yue Haibing <yuehaibing@huawei.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>

Author: Yue Haibing

drivers/hid/intel-ish-hid/ishtp/bus.h

@@ -46,7 +46,6 @@ struct ishtp_cl_device {
 };
 
 int	ishtp_bus_new_client(struct ishtp_device *dev);
-void	ishtp_remove_all_clients(struct ishtp_device *dev);
 int	ishtp_cl_device_bind(struct ishtp_cl *cl);
 void	ishtp_cl_bus_rx_event(struct ishtp_cl_device *device);
 

drivers/hid/intel-ish-hid/ishtp/client.h

@@ -109,7 +109,6 @@ struct ishtp_cl {
 };
 
 /* Client connection managenment internal functions */
-int ishtp_can_client_connect(struct ishtp_device *ishtp_dev, guid_t *uuid);
 int ishtp_fw_cl_by_id(struct ishtp_device *dev, uint8_t client_id);
 void ishtp_cl_send_msg(struct ishtp_device *dev, struct ishtp_cl *cl);
 void recv_ishtp_cl_msg(struct ishtp_device *dev,