removed unneeded code
Fixed Twig_Loader_Chain::exists for a loader which implements Twig_ExistsLoaderInterface
merged branch hason/chain (PR #1093)

This PR was merged into the master branch.

Discussion
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Fixed Twig_Loader_Chain::exists for a loader which implements Twig_ExistsLoaderInterface

Commits
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8a662f2 Fixed Twig_Loader_Chain::exists for a loader which implements Twig_ExistsLoaderInterface