codacy: Useless parentheses

Signed-off-by: Andy Scherzinger <info@andy-scherzinger.de>

src/main/java/com/owncloud/android/datamodel/ThumbnailsCacheManager.java

@@ -933,7 +933,7 @@ public final class ThumbnailsCacheManager {
             avatar = getBitmapFromDiskCache(avatarKey);
 
             // Download avatar from server, only if older than 60 min or avatar does not exist
-            if ((System.currentTimeMillis() - timestamp >= 60 * 60 * 1000 || avatar == null)) {
+            if (System.currentTimeMillis() - timestamp >= 60 * 60 * 1000 || avatar == null) {
                 GetMethod get = null;
                 try {
                     if (mAccount != null) {

src/main/java/com/owncloud/android/ui/activity/DrawerActivity.java

@@ -330,7 +330,7 @@ public abstract class DrawerActivity extends ToolbarActivity
 
         switch (menuItem.getItemId()) {
             case R.id.nav_all_files:
-                if ((this instanceof FileDisplayActivity) &&
+                if (this instanceof FileDisplayActivity &&
                     !(((FileDisplayActivity) this).getLeftFragment() instanceof PhotoFragment) &&
                     !(((FileDisplayActivity) this).getLeftFragment() instanceof PreviewTextStringFragment)) {
                     showFiles(false);

src/main/java/com/owncloud/android/ui/activity/ManageAccountsActivity.java

@@ -475,7 +475,7 @@ public class ManageAccountsActivity extends FileActivity implements UserListAdap
             PopupMenu popup = new PopupMenu(this, view);
             popup.getMenuInflater().inflate(R.menu.item_account, popup.getMenu());
 
-            if((accountManager.getUser()).equals(user)) {
+            if(accountManager.getUser().equals(user)) {
                 popup.getMenu().findItem(R.id.action_open_account).setVisible(false);
             }
             popup.setOnMenuItemClickListener(item -> {

src/main/java/com/owncloud/android/ui/activity/UserInfoActivity.java

@@ -154,7 +154,7 @@ public class UserInfoActivity extends DrawerActivity implements Injectable {
 
     @Override
     public boolean onPrepareOptionsMenu(Menu menu) {
-        if ((accountManager.getUser()).equals(user)) {
+        if (accountManager.getUser().equals(user)) {
             menu.findItem(R.id.action_open_account).setVisible(false);
         }
         return super.onPrepareOptionsMenu(menu);