chore: remove unused var and logic

Author: MistEO

include/MaaUtils/Logger.h

@@ -10,8 +10,6 @@ class MAA_UTILS_API Logger
 public:
     static constexpr std::string_view kLogFilename = "maa.log";
     static constexpr std::string_view kLogbakFilename = "maa.bak.log";
-    static constexpr std::string_view kDumpsDirname = "dumps";
-    static constexpr std::string_view kDumpsbakDirname = "dumps.bak";
 
 public:
     static Logger& get_instance();

source/Logger/Logger.cpp

@@ -136,10 +136,6 @@ bool Logger::rotate()
     const std::filesystem::path bak_path = log_dir_ / kLogbakFilename;
     std::filesystem::copy(log_path_, bak_path, std::filesystem::copy_options::overwrite_existing, ec);
 
-    const std::filesystem::path dumps_bak_path = log_dir_ / kDumpsbakDirname;
-    if (std::filesystem::exists(dumps_bak_path)) {
-        std::filesystem::remove_all(dumps_bak_path, ec);
-    }
     return true;
 }