Remove semantic-media-wiki from require-dev

Author: paladox

composer.json

@@ -29,7 +29,6 @@
 		"composer/installers": "^2|^1.0.1"
 	},
 	"require-dev": {
-		"mediawiki/semantic-media-wiki": "@dev",
 		"squizlabs/php_codesniffer": "~2.1",
 		"phpmd/phpmd": "~2.1"
 	},