Remove a bunch of entirely unnecessary stuff from composer.json

This isn't meant to be published as a composer package, so all of that
information is unnecessary and redundant.

Change-Id: I6df06ccd1acb60e9861694f73b90c94f20b15fde

composer.json

@@ -1,35 +1,4 @@
 {
-	"name": "mediawiki/timeless-skin",
-	"type": "mediawiki-skin",
-	"description": "A timeless skin designed after the Winter prototype by Brandon Harris, and various styles by the Wikimedia Foundation.",
-	"keywords": [
-		"wiki",
-		"MediaWiki",
-		"skin"
-	],
-	"homepage": "https://www.mediawiki.org/wiki/Skin:Timeless",
-	"license": "GPL-2.0+",
-	"authors": [
-		{
-			"name": "Isarra"
-		}
-	],
-	"support": {
-		"wiki": "https://www.mediawiki.org/wiki/Skin:Timeless",
-		"forum": "https://www.mediawiki.org/wiki/Skin_talk:Timeless",
-		"source": "https://phabricator.wikimedia.org/diffusion/STIM/",
-		"irc": "irc://irc.freenode.org/mediawiki"
-	},
-	"require": {
-		"php": ">=5.5.9",
-		"composer/installers": ">1.0.12"
-	},
-	"extra": {
-		"branch-alias": {
-			"dev-master": "1.x-dev"
-		},
-		"installer-name": "Timeless"
-	},
 	"require-dev": {
 		"jakub-onderka/php-parallel-lint": "0.9.2",
 		"mediawiki/mediawiki-codesniffer": "0.10.1",