fix: remove fatal log level (useless anyway)

src/logger.cpp

@@ -1,7 +1,7 @@
 /*
  * @Author: Uyanide pywang0608@foxmail.com
  * @Date: 2025-08-07 01:12:37
- * @LastEditTime: 2026-01-15 02:34:40
+ * @LastEditTime: 2026-01-15 04:07:40
  * @Description: Implementation of logger.
  */
 #include "logger.h"
@@ -126,7 +126,3 @@ void GeneralLogger::warn(const QString& msg) {
 void GeneralLogger::critical(const QString& msg) {
     qCCritical(logMain).noquote() << msg;
 }
-
-void GeneralLogger::fatal(const QString& msg) {
-    qCFatal(logMain).noquote() << msg;
-}

src/logger.h

@@ -1,7 +1,7 @@
 /*
  * @Author: Uyanide pywang0608@foxmail.com
  * @Date: 2025-08-05 10:43:31
- * @LastEditTime: 2026-01-15 00:57:58
+ * @LastEditTime: 2026-01-15 04:07:46
  * @Description: A simple thread-safe logger.
  */
 #ifndef GENERAL_LOGGER_H
@@ -23,8 +23,6 @@ void warn(const QString& msg);
 
 void critical(const QString& msg);
 
-void fatal(const QString& msg);
-
 }  // namespace GeneralLogger
 
 class Logger {