Revert "다른 프레임워크와 css 충돌을 피하기 위해 rhymix.less의 class/id 이름에 prefix 처리"

This reverts commit b1cb1f3f34.

modules/member/skins/default/logout.html

@@ -4,6 +4,6 @@
 	<input type="hidden" name="mid" value="{$mid}" />
     <h1>{$lang->cmd_logout}</h1>
 	<p>{$lang->confirm_logout}</p>
-	<p><input type="submit" value="{$lang->cmd_logout}" class="rhymix_button inverse" /></p>
+	<p><input type="submit" value="{$lang->cmd_logout}" class="btn btn-inverse" /></p>
 </form>
 <include target="./common_footer.html" />