Revert "Experiment: delete browsing data"

This reverts commit 1aacdea66e.

Results in a restart, odd

app/src/main/java/eu/faircode/email/FragmentOptionsMisc.java

@@ -59,7 +59,6 @@ import android.view.MenuInflater;
 import android.view.MenuItem;
 import android.view.View;
 import android.view.ViewGroup;
-import android.webkit.WebStorage;
 import android.widget.AdapterView;
 import android.widget.ArrayAdapter;
 import android.widget.Button;
@@ -80,8 +79,6 @@ import androidx.cardview.widget.CardView;
 import androidx.constraintlayout.widget.Group;
 import androidx.lifecycle.Observer;
 import androidx.preference.PreferenceManager;
-import androidx.webkit.WebStorageCompat;
-import androidx.webkit.WebViewFeature;
 import androidx.work.WorkManager;
 
 import java.io.File;
@@ -2431,17 +2428,7 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
                 WorkerCleanup.init(context);
                 WorkerDailyRules.init(context);
                 WorkerSync.init(context);
-                Runnable done = new Runnable() {
-                    @Override
-                    public void run() {
-                        ToastEx.makeText(context, R.string.title_completed, Toast.LENGTH_LONG).show();
-                    }
-                };
-                if (false &&
-                        WebViewEx.isFeatureSupported(context, WebViewFeature.DELETE_BROWSING_DATA))
-                    WebStorageCompat.deleteBrowsingData(WebStorage.getInstance(), Helper.getSerialExecutor(), done);
-                else
-                    done.run();
+                ToastEx.makeText(context, R.string.title_completed, Toast.LENGTH_LONG).show();
             }
 
             @Override