MDL-71163 mod_data: Remove duplicate info for open and close time

mod/data/view.php

@@ -362,13 +362,9 @@
     }
 
     // If data activity closed dont let students in.
+    // No need to display warnings because activity dates are displayed at the top of the page.
     list($showactivity, $warnings) = data_get_time_availability_status($data, $canmanageentries);
 
-    if (!$showactivity) {
-        $reason = current(array_keys($warnings));
-        echo $OUTPUT->notification(get_string($reason, 'data', $warnings[$reason]));
-    }
-
 if ($showactivity) {
     // Print the tabs
     if ($record or $mode == 'single') {