Index: branches/version-2_5-dev/data/class/util/GC_Utils.php
===================================================================
--- branches/version-2_5-dev/data/class/util/GC_Utils.php	(revision 19805)
+++ branches/version-2_5-dev/data/class/util/GC_Utils.php	(revision 20031)
@@ -222,20 +222,4 @@
     }
 
-    /*----------------------------------------------------------------------
-     * [名称] sf_explodeExt
-     * [概要] ファイルの拡張子取得
-     * [引数] ファイル名
-     * [戻値] 拡張子
-     * [依存] なし
-     * [注釈] -
-     *----------------------------------------------------------------------*/
-    function gf_explodeExt($fileName) {
-        $ext1 = explode(".", $fileName);
-        $ext2 = $ext1[count($ext1) - 1];
-        $ext2 = strtolower($ext2);
-        return $ext2;
-    }
-
-
     /*----------------------------------------------------------------------------------------------------------------------
      * [名称] gfMailHeaderAddr