remove unused imports

rest/qr.py

@@ -3,8 +3,6 @@ from typing import Union
 from qrcode import QRCode
 from qrcode.constants import ERROR_CORRECT_L, ERROR_CORRECT_M, ERROR_CORRECT_Q, ERROR_CORRECT_H
 from qrcode.image.svg import SvgPathFillImage
-from qrcode.image.styles.moduledrawers.svg import SvgCircleDrawer
-from qrcode.image.styles.colormasks import RadialGradiantColorMask
 
 QR_MAX_BYTES = {
     ERROR_CORRECT_H: 1273,