refactor(TimeHelper): 移除已过时的UTC时间转换方法

清理已标记为过时的方法UtcToUtcDateTime和UtcToLocalDateTime，这些功能已被UtcSecondsToUtcDateTime和UtcSecondsToLocalDateTime替代

Author: AlianBlank

GameFrameX.Utility/TimeHelper.cs

@@ -1,34 +1,34 @@
-// ==========================================================================================
-//  GameFrameX 组织及其衍生项目的版权、商标、专利及其他相关权利
-//  GameFrameX organization and its derivative projects' copyrights, trademarks, patents, and related rights
-//  均受中华人民共和国及相关国际法律法规保护。
-//  are protected by the laws of the People's Republic of China and relevant international regulations.
-//  
-//  使用本项目须严格遵守相应法律法规及开源许可证之规定。
-//  Usage of this project must strictly comply with applicable laws, regulations, and open-source licenses.
-//  
-//  本项目采用 MIT 许可证与 Apache License 2.0 双许可证分发，
-//  This project is dual-licensed under the MIT License and Apache License 2.0,
-//  完整许可证文本请参见源代码根目录下的 LICENSE 文件。
-//  please refer to the LICENSE file in the root directory of the source code for the full license text.
-//  
-//  禁止利用本项目实施任何危害国家安全、破坏社会秩序、
-//  It is prohibited to use this project to engage in any activities that endanger national security, disrupt social order,
-//  侵犯他人合法权益等法律法规所禁止的行为！
-//  or infringe upon the legitimate rights and interests of others, as prohibited by laws and regulations!
-//  因基于本项目二次开发所产生的一切法律纠纷与责任，
-//  Any legal disputes and liabilities arising from secondary development based on this project
-//  本项目组织与贡献者概不承担。
-//  shall be borne solely by the developer; the project organization and contributors assume no responsibility.
-//  
-//  GitHub 仓库：https://github.com/GameFrameX
-//  GitHub Repository: https://github.com/GameFrameX
-//  Gitee  仓库：https://gitee.com/GameFrameX
-//  Gitee Repository:  https://gitee.com/GameFrameX
-//  官方文档：https://gameframex.doc.alianblank.com/
-//  Official Documentation: https://gameframex.doc.alianblank.com/
-// ==========================================================================================
-
+// ==========================================================================================
+//  GameFrameX 组织及其衍生项目的版权、商标、专利及其他相关权利
+//  GameFrameX organization and its derivative projects' copyrights, trademarks, patents, and related rights
+//  均受中华人民共和国及相关国际法律法规保护。
+//  are protected by the laws of the People's Republic of China and relevant international regulations.
+//  
+//  使用本项目须严格遵守相应法律法规及开源许可证之规定。
+//  Usage of this project must strictly comply with applicable laws, regulations, and open-source licenses.
+//  
+//  本项目采用 MIT 许可证与 Apache License 2.0 双许可证分发，
+//  This project is dual-licensed under the MIT License and Apache License 2.0,
+//  完整许可证文本请参见源代码根目录下的 LICENSE 文件。
+//  please refer to the LICENSE file in the root directory of the source code for the full license text.
+//  
+//  禁止利用本项目实施任何危害国家安全、破坏社会秩序、
+//  It is prohibited to use this project to engage in any activities that endanger national security, disrupt social order,
+//  侵犯他人合法权益等法律法规所禁止的行为！
+//  or infringe upon the legitimate rights and interests of others, as prohibited by laws and regulations!
+//  因基于本项目二次开发所产生的一切法律纠纷与责任，
+//  Any legal disputes and liabilities arising from secondary development based on this project
+//  本项目组织与贡献者概不承担。
+//  shall be borne solely by the developer; the project organization and contributors assume no responsibility.
+//  
+//  GitHub 仓库：https://github.com/GameFrameX
+//  GitHub Repository: https://github.com/GameFrameX
+//  Gitee  仓库：https://gitee.com/GameFrameX
+//  Gitee Repository:  https://gitee.com/GameFrameX
+//  官方文档：https://gameframex.doc.alianblank.com/
+//  Official Documentation: https://gameframex.doc.alianblank.com/
+// ==========================================================================================
+
 namespace GameFrameX.Utility;
 
 /// <summary>
@@ -1069,21 +1069,6 @@ public static string CurrentDateTimeWithUtcFullString()
         return DateTime.UtcNow.ToString("yyyy-MM-dd-HH-mm-ss.fff K");
     }
 
-    /// <summary>
-    /// UTC 时间戳 转换成UTC时间
-    /// </summary>
-    /// <param name="utcTimestamp">UTC时间戳,单位秒</param>
-    /// <returns>转换后的UTC时间。</returns>
-    /// <remarks>
-    /// 此方法已过时,请使用UtcSecondsToUtcDateTime替代
-    /// 用于保持向后兼容性
-    /// </remarks>
-    [Obsolete("UtcSecondsToUtcDateTime(long utcTimestampSeconds)代替")]
-    public static DateTime UtcToUtcDateTime(long utcTimestamp)
-    {
-        return UtcSecondsToUtcDateTime(utcTimestamp);
-    }
-
     /// <summary>
     /// UTC 时间戳 转换成UTC时间
     /// </summary>
@@ -1114,21 +1099,6 @@ public static DateTime UtcMillisecondsToUtcDateTime(long utcTimestampMillisecond
         return DateTimeOffset.FromUnixTimeMilliseconds(utcTimestampMilliseconds).UtcDateTime;
     }
 
-    /// <summary>
-    /// UTC 时间戳 转换成本地时间
-    /// </summary>
-    /// <param name="utcTimestamp">UTC时间戳,单位秒</param>
-    /// <returns>转换后的本地时间。</returns>
-    /// <remarks>
-    /// 此方法已过时,请使用UtcSecondsToLocalDateTime替代
-    /// 用于保持向后兼容性
-    /// </remarks>
-    [Obsolete("UtcSecondsToLocalDateTime(long utcTimestampSeconds) 代替")]
-    public static DateTime UtcToLocalDateTime(long utcTimestamp)
-    {
-        return UtcSecondsToLocalDateTime(utcTimestamp);
-    }
-
     /// <summary>
     /// UTC 时间戳 转换成本地时间
     /// </summary>