Merge pull request #35 in PF/design from ~KERRY/design-pf:9.0 to 9.0

* commit 'bb3c9924f881a2a01c6596c102d334ea30db8562':
  REPORT-2354 将平台的插件管理和设计器的插件管理统一起来

designer_base/src/com/fr/design/extra/PluginOperateUtils.java

@@ -18,7 +18,6 @@ import com.fr.plugin.manage.bbs.BBSUserInfo;
 import com.fr.plugin.manage.control.PluginTaskCallback;
 import com.fr.plugin.view.PluginView;
 import com.fr.stable.StringUtils;
-import com.fr.third.v2.org.apache.poi.util.StringUtil;
 
 import java.io.File;
 import java.util.List;