Add 'TeX/' from commit '19bba4dc526b247b6b9a59ccbcb7422614a7a17b'

git-subtree-dir: TeX
git-subtree-mainline: f6665972d8a44730d195734a2bfde420089f8e71
git-subtree-split: 19bba4dc526b247b6b9a59ccbcb7422614a7a17b
remove duplicate
clean up