i2c: Discard the i2c algo del_bus wrappers

They are all only calling i2c_del_adapter, so we may as well do
it directly.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
diff --git a/drivers/media/video/vino.c b/drivers/media/video/vino.c
index 6b6dff4..a373c14 100644
--- a/drivers/media/video/vino.c
+++ b/drivers/media/video/vino.c
@@ -782,7 +782,7 @@
 
 static int vino_i2c_del_bus(void)
 {
-	return i2c_sgi_del_bus(&vino_i2c_adapter);
+	return i2c_del_adapter(&vino_i2c_adapter);
 }
 
 static int i2c_camera_command(unsigned int cmd, void *arg)