android: camera_hal_manager: Remove unused close() method

The CameraHalManager::close() method isn't used, remove it.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>

src/android/camera_hal_manager.h

@@ -29,7 +29,6 @@ public:
 	int init();
 
 	CameraProxy *open(unsigned int id, const hw_module_t *module);
-	int close(CameraProxy *proxy);
 
 	unsigned int numCameras() const;
 	int getCameraInfo(unsigned int id, struct camera_info *info);