removed Helper class and made the function inline

Author: Nikunj-Aggarwal

app/src/main/java/org/schabi/newpipe/error/ErrorActivity.java

@@ -22,11 +22,11 @@
 import org.schabi.newpipe.BuildConfig;
 import org.schabi.newpipe.R;
 import org.schabi.newpipe.databinding.ActivityErrorBinding;
-import org.schabi.newpipe.util.DateTimeHelper;
 import org.schabi.newpipe.util.Localization;
 import org.schabi.newpipe.util.ThemeHelper;
 import org.schabi.newpipe.util.external_communication.ShareUtils;
 
+import java.time.LocalDateTime;
 import java.time.format.DateTimeFormatter;
 import java.util.Arrays;
 import java.util.stream.Collectors;
@@ -107,7 +107,7 @@ protected void onCreate(final Bundle savedInstanceState) {
 
         // important add guru meditation
         addGuruMeditation();
-        currentTimeStamp = DateTimeHelper.currentDateToIsoDateFormat();
+        currentTimeStamp = LocalDateTime.now().format(DateTimeFormatter.ISO_DATE_TIME);
 
         activityErrorBinding.errorReportEmailButton.setOnClickListener(v ->
                 openPrivacyPolicyDialog(this, "EMAIL"));