Shearwater: Remove timesync for Predator.

Remove the timesync function from the code for the Predator - testing
has shown that this function is not supported by this model.

Signed-off-by: Michael Keller <github@ike.ch>

src/shearwater_predator.c

@@ -44,7 +44,6 @@ typedef struct shearwater_predator_device_t {
 static dc_status_t shearwater_predator_device_set_fingerprint (dc_device_t *abstract, const unsigned char data[], unsigned int size);
 static dc_status_t shearwater_predator_device_dump (dc_device_t *abstract, dc_buffer_t *buffer);
 static dc_status_t shearwater_predator_device_foreach (dc_device_t *abstract, dc_dive_callback_t callback, void *userdata);
-static dc_status_t shearwater_predator_device_timesync (dc_device_t *abstract, const dc_datetime_t *datetime);
 
 static const dc_device_vtable_t shearwater_predator_device_vtable = {
 	sizeof(shearwater_predator_device_t),
@@ -54,7 +53,7 @@ static const dc_device_vtable_t shearwater_predator_device_vtable = {
 	NULL, /* write */
 	shearwater_predator_device_dump, /* dump */
 	shearwater_predator_device_foreach, /* foreach */
-	shearwater_predator_device_timesync,
+	NULL, /* timesync */
 	NULL /* close */
 };
 
@@ -358,9 +357,3 @@ shearwater_predator_extract_dives (dc_device_t *abstract, const unsigned char da
 		return shearwater_predator_extract_predator (abstract, data, size, callback, userdata);
 	}
 }
-
-static dc_status_t
-shearwater_predator_device_timesync (dc_device_t *abstract, const dc_datetime_t *datetime)
-{
-	return shearwater_common_timesync_local ((shearwater_common_device_t *) abstract, datetime);
-}