Merge pull request #441 from javiereguiluz/update_metadata

Update Symfony bundle metadata

Author: greg0ire

.symfony.bundle.yaml

@@ -5,7 +5,6 @@ branches:
     - "3.6.x"
     - "3.7.x"
 maintained_branches:
-    - "3.5.x"
     - "3.6.x"
     - "3.7.x"
 doc_dir: "docs/"