Merge pull request #536 from wmde/JeroenDeDauw-patch-1

Remove no longer needed dependency

Author: addshore

composer.json

@@ -24,7 +24,6 @@
 	},
 	"require": {
 		"php": ">=5.3.0",
-		"diff/diff": "~1.0|~2.0",
 		"data-values/data-values": "~0.1|~1.0"
 	},
 	"require-dev": {