Remove FeedProviderManager and Feed Provider and remove references to them.

Shared/ExtensionPoints/ExtensionPointManager.swift

@@ -27,7 +27,7 @@ public enum ExtensionPointManagerError: LocalizedError {
 }
 
 
-final class ExtensionPointManager: FeedProviderManagerDelegate {
+final class ExtensionPointManager {
 	
 	static let shared = ExtensionPointManager()
 
@@ -65,10 +65,6 @@ final class ExtensionPointManager: FeedProviderManagerDelegate {
 		return commands
 	}
 	
-	var activeFeedProviders: [FeedProvider] {
-		return activeExtensionPoints.values.compactMap({ return $0 as? FeedProvider })
-	}
-	
 	init() {
 		possibleExtensionPointTypes = []
 		loadExtensionPoints()
@@ -126,14 +122,4 @@ private extension ExtensionPointManager {
 		#endif
 		}
 	}
-	
-	func feedProviderMatching(_ offered: URLComponents, ability: FeedProviderAbility) -> FeedProvider? {
-		for extensionPoint in activeExtensionPoints.values {
-			if let feedProvider = extensionPoint as? FeedProvider, feedProvider.ability(offered) == ability {
-				return feedProvider
-			}
-		}
-		return nil
-	}
-
 }

Shared/Images/WebFeedIconDownloader.swift

@@ -118,31 +118,7 @@ public final class WebFeedIconDownloader {
 			return nil
 		}
 		
-		if let components = URLComponents(string: feed.url), let feedProvider = FeedProviderManager.shared.best(for: components) {
-			guard !urlsInProgress.contains(feed.url) else {
-				return nil
-			}
-			urlsInProgress.insert(feed.url)
-			
-			feedProvider.iconURL(components) { result in
-				self.urlsInProgress.remove(feed.url)
-				switch result {
-				case .success(let feedProviderURL):
-					self.feedURLToIconURLCache[feed.url] = feedProviderURL
-					self.feedURLToIconURLCacheDirty = true
-					self.icon(forURL: feedProviderURL, feed: feed) { (image) in
-						if let image = image {
-							self.postFeedIconDidBecomeAvailableNotification(feed)
-							self.cache[feed] = IconImage(image)
-						}
-					}
-				case .failure:
-					checkFeedIconURL()
-				}
-			}
-		} else {
-			checkFeedIconURL()
-		}
+		checkFeedIconURL()
 
 		return nil
 	}