deleted old seminar
Squashed 'seminar/' content from commit f0262e2

git-subtree-dir: seminar
git-subtree-split: f0262e2f37804b2659ae62d5973b1efc2f3e5359
Merge commit '53ef54a033b10b41e791f13a6f247f955dad236d' as 'seminar'