Removed unused class

extractor/src/main/java/org/schabi/newpipe/extractor/utils/DonationLinkHelper.java

@@ -1,44 +0,0 @@
-package org.schabi.newpipe.extractor.utils;
-
-import java.net.MalformedURLException;
-
-/**
- * Note: this class seems unused? Should it be removed?
- */
-public final class DonationLinkHelper {
-    public enum DonationService {
-        NO_DONATION,
-        PATREON,
-        PAYPAL,
-    }
-
-    public enum AffiliateService {
-        NO_AFFILIATE,
-        AMAZON,
-    }
-
-    private DonationLinkHelper() {
-    }
-
-    public static DonationService getDonationServiceByLink(final String link)
-            throws MalformedURLException {
-        switch (Utils.stringToURL(link).getHost()) {
-            case "www.patreon.com":
-            case "patreon.com":
-                return DonationService.PATREON;
-            case "www.paypal.me":
-            case "paypal.me":
-                return DonationService.PAYPAL;
-            default:
-                return DonationService.NO_DONATION;
-        }
-    }
-
-    public static AffiliateService getAffiliateServiceByLink(final String link)
-            throws MalformedURLException {
-        if ("amzn.to".equals(Utils.stringToURL(link).getHost())) {
-            return AffiliateService.AMAZON;
-        }
-        return AffiliateService.NO_AFFILIATE;
-    }
-}