update Admin.NET/Admin.NET.Core/Extension/RepositoryExtension.cs.

方法没有明确的实现，且影响了Linq中的Where方法使用，未使用建议移除

Signed-off-by: Lzh666 <422235757@qq.com>

Admin.NET/Admin.NET.Core/Extension/RepositoryExtension.cs

@@ -360,31 +360,6 @@ public static class RepositoryExtension
         return ignore ? queryable.ClearFilter<ITenantIdFilter>() : queryable;
     }
 
-    /// <summary>
-    /// 导航+子表过滤 创建一个扩展函数，默认是Class不支持Where
-    /// </summary>
-    /// <typeparam name="T"></typeparam>
-    /// <param name="thisValue"></param>
-    /// <param name="whereExpression"></param>
-    /// <returns></returns>
-    public static List<T> Where<T>(this T thisValue, Func<T, bool> whereExpression) where T : class, new()
-    {
-        return new List<T>() { thisValue };
-    }
-
-    /// <summary>
-    /// 导航+子表过滤 创建一个扩展函数，默认是Class不支持WhereIF
-    /// </summary>
-    /// <typeparam name="T"></typeparam>
-    /// <param name="thisValue"></param>
-    /// <param name="isWhere"></param>
-    /// <param name="whereExpression"></param>
-    /// <returns></returns>
-    public static List<T> WhereIF<T>(this T thisValue, bool isWhere, Func<T, bool> whereExpression) where T : class, new()
-    {
-        return new List<T>() { thisValue };
-    }
-
     /// <summary>
     /// 只更新某些列
     /// </summary>