diff --git a/date_api/date_api.module b/date_api/date_api.module
index da94654..4384c34 100644
--- a/date_api/date_api.module
+++ b/date_api/date_api.module
@@ -600,37 +600,6 @@ function date_is_all_day($string1, $string2, $granularity = 'second', $increment
 }
 
 /**
- * Helper function to round minutes and seconds to requested value.
- */
-function date_increment_round(&$date, $increment) {
-  // Round minutes and seconds, if necessary.
-  if ($date instanceOf DrupalDateTime && $increment > 1) {
-    $day = intval(date_format($date, 'j'));
-    $hour = intval(date_format($date, 'H'));
-    $second = intval(round(intval(date_format($date, 's')) / $increment) * $increment);
-    $minute = intval(date_format($date, 'i'));
-    if ($second == 60) {
-      $minute += 1;
-      $second = 0;
-    }
-    $minute = intval(round($minute / $increment) * $increment);
-    if ($minute == 60) {
-      $hour += 1;
-      $minute = 0;
-    }
-    date_time_set($date, $hour, $minute, $second);
-    if ($hour == 24) {
-      $day += 1;
-      $hour = 0;
-      $year = date_format($date, 'Y');
-      $month = date_format($date, 'n');
-      date_date_set($date, $year, $month, $day);
-    }
-  }
-  return $date;
-}
-
-/**
  * This function will replace ISO values that have the pattern 9999-00-00T00:00:00
  * with a pattern like 9999-01-01T00:00:00, to match the behavior of non-ISO
  * dates and ensure that date objects created from this value contain a valid month