processing ignore boxes in atss assigner (#3082)
processing ignore boxes in atss assigner (#3082)

* processing ignore boxes in atss assigner

* formatting

* flake8 correct

* correct flake8 v2

* frommatting via pycharm

* OMG this is the last commit

* fix bug

* format

Co-authored-by: d.rybalchenko <4fa6fd2538cca28b6124b374732149b7b5633ab9@visionlabs.ru>
Co-authored-by: Cao Yuhang <b58cfe0e3c553ad666648df5a5b0d9b1015e5538@gmail.com>
open-mmlab/mmdetection,open-mmlab/mmdetection