Preparation for subtree configuration
removing the src_ais folder
Add 'src_ais/' from commit 'dec53906d84105ad9b1e559b3a5be0e315164f28'

git-subtree-dir: src_ais
git-subtree-mainline: c03c16608ad37a8a909532f80b20396e98b18200
git-subtree-split: dec53906d84105ad9b1e559b3a5be0e315164f28