diff --git a/_projects/qa-sigir-20/video/text-conv-qa.pptx b/_projects/qa-sigir-20/video/text-conv-qa.pptx deleted file mode 100644 index 80ac53c1431f..000000000000 Binary files a/_projects/qa-sigir-20/video/text-conv-qa.pptx and /dev/null differ diff --git a/_projects/qa-sigir-20/video/text-feedback-interpretability.pptx b/_projects/qa-sigir-20/video/text-feedback-interpretability.pptx deleted file mode 100644 index 71f47b5759ba..000000000000 Binary files a/_projects/qa-sigir-20/video/text-feedback-interpretability.pptx and /dev/null differ diff --git a/_projects/qa-sigir-20/video/text-intro.pptx b/_projects/qa-sigir-20/video/text-intro.pptx deleted file mode 100644 index bd26e1bb6936..000000000000 Binary files a/_projects/qa-sigir-20/video/text-intro.pptx and /dev/null differ diff --git a/_projects/qa-sigir-20/video/text-mrc.pptx b/_projects/qa-sigir-20/video/text-mrc.pptx deleted file mode 100644 index 566ee5fd2cb5..000000000000 Binary files a/_projects/qa-sigir-20/video/text-mrc.pptx and /dev/null differ diff --git a/_projects/qa-sigir-20/video/text-summary.pptx b/_projects/qa-sigir-20/video/text-summary.pptx deleted file mode 100644 index e78d7d56f494..000000000000 Binary files a/_projects/qa-sigir-20/video/text-summary.pptx and /dev/null differ