Merge pull request #7469 from dataease/pr@dev-v2@fixDatasource

fix:【数据源】-本地Excel文件创建的数据源数据预览为空

core/core-backend/src/main/java/io/dataease/datasource/provider/ExcelUtils.java

@@ -297,11 +297,6 @@ public class ExcelUtils {
     }
 
     private String cellType(String value) {
-        try {
-            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
-            sdf.parse(value);
-            return "DATETIME";
-        } catch (Exception e1) {
         if(value.length()> 19){
             return "TEXT";
         }
@@ -317,7 +312,6 @@ public class ExcelUtils {
             return "TEXT";
         }
     }
-    }
 
     private void cellType(String value, int i, TableField tableFiled) {
         if (StringUtils.isEmpty(value)) {