diff --git a/sql/handler.cc b/sql/handler.cc
index 05d69bdb2ce..28f581d8b59 100644
--- a/sql/handler.cc
+++ b/sql/handler.cc
@@ -3059,45 +3059,6 @@ void handler::adjust_next_insert_id_after_explicit_value(ulonglong nr)
 }
 
 
-/** @brief
-  Computes the largest number X:
-  - smaller than or equal to "nr"
-  - of the form: auto_increment_offset + N * auto_increment_increment
-  where N>=0.
-
-  SYNOPSIS
-    prev_insert_id
-      nr            Number to "round down"
-      variables     variables struct containing auto_increment_increment and
-                    auto_increment_offset
-
-  RETURN
-    The number X if it exists, "nr" otherwise.
-*/
-inline ulonglong
-prev_insert_id(ulonglong nr, struct system_variables *variables)
-{
-  if (unlikely(nr < variables->auto_increment_offset))
-  {
-    /*
-      There's nothing good we can do here. That is a pathological case, where
-      the offset is larger than the column's max possible value, i.e. not even
-      the first sequence value may be inserted. User will receive warning.
-    */
-    DBUG_PRINT("info",("auto_increment: nr: %lu cannot honour "
-                       "auto_increment_offset: %lu",
-                       (ulong) nr, variables->auto_increment_offset));
-    return nr;
-  }
-  if (variables->auto_increment_increment == 1)
-    return nr; // optimization of the formula below
-  nr= (((nr - variables->auto_increment_offset)) /
-       (ulonglong) variables->auto_increment_increment);
-  return (nr * (ulonglong) variables->auto_increment_increment +
-          variables->auto_increment_offset);
-}
-
-
 /**
   Update the auto_increment field if necessary.