diff --git a/docs/imgs/cosine_decay_example.png b/docs/imgs/cosine_decay_example.png
deleted file mode 100644
index f9d0460b551830eed9dc16ccf1980a44026143fa..0000000000000000000000000000000000000000
Binary files a/docs/imgs/cosine_decay_example.png and /dev/null differ