deleted old seminar
Squashed 'seminar/' content from commit 162aab7

git-subtree-dir: seminar
git-subtree-split: 162aab76a172768155f2ed9b299338a31ea39f8e
Merge commit 'f0bccaa1e9902ff5c075d8e41793cf841439afa2' as 'seminar'