Disable tree-sitter for tests
Disable tree-sitter for tests

atom-grammar-test doesn't currently work with tree-sitter since they
don't expose tokens in `tokenizeLine`

https://github.com/atom/atom/blob/6f16a7a40cda53ab9b351b6d3cd946f102814159/src/tree-sitter-grammar.js#L135-L140

kevinastone/atom-grammar-test