diff --git a/v0.5/4-demos/02_water/O-ESD_demo_02_water.mp4 b/v0.5/4-demos/02_water/O-ESD_demo_02_water.mp4 deleted file mode 100644 index 79efb19..0000000 Binary files a/v0.5/4-demos/02_water/O-ESD_demo_02_water.mp4 and /dev/null differ