refs #15650 [master] display playing time as-is

* removes string manipulation for playing times
* MARC 306$a is always (?) filled with display-ready playing times

module/finc/src/finc/RecordDriver/SolrMarc.php

@@ -290,16 +290,8 @@ class SolrMarc extends SolrDefault
      */
     public function getPlayingTimes()
     {
-        $times = $this->getFieldArray('306', ['a'], false);
-
-        // Format the times to include colons ("HH:MM:SS" format).
-        for ($x = 0; $x < count($times); $x++) {
-            $times[$x] = substr($times[$x], 0, 2) . ':' .
-                substr($times[$x], 2, 2) . ':' .
-                substr($times[$x], 4, 2);
-        }
-
-        return $times;
+        // we do not need the special re-formatting from the super method
+        return $this->getFieldArray('306', ['a'], false);
     }
 
     /**