remove subproject
Squashed 'src/Kun/DoctrineExtensionsBundle/' content from commit f1946bd

git-subtree-dir: src/Kun/DoctrineExtensionsBundle
git-subtree-split: f1946bd07bf22516a788f5761ea672b0e9127993
Merge commit 'c987135c819c7b53cabfabbc5d0d828a6c1d639c' as 'src/Kun/DoctrineExtensionsBundle'