chore(mangareader): remove Crow Scans source (AR) - site is offline

dart/manga/multisrc/mangareader/src/crowscans/crowscans.dart

@@ -1,14 +0,0 @@
-import '../../../../../../model/source.dart';
-
-Source get crowscansSource => _crowscansSource;
-Source _crowscansSource = Source(
-  name: "Crow Scans",
-  baseUrl: "https://crowscans.com",
-  lang: "ar",
-  isNsfw: false,
-  typeSource: "mangareader",
-  iconUrl:
-      "https://raw.githubusercontent.com/kodjodevf/mangayomi-extensions/$branchName/dart/manga/multisrc/mangareader/src/crowscans/icon.png",
-  dateFormat: "MMMM dd, yyyy",
-  dateFormatLocale: "ar",
-);