Core/DB Layer: Fix a memory leak.

src/server/authserver/Main.cpp

@@ -246,8 +246,6 @@ extern int main(int argc, char **argv)
 // Initialize connection to the database
 bool StartDB()
 {
-    MySQL::Library_Init();
-
     std::string dbstring = ConfigMgr::GetStringDefault("LoginDatabaseInfo", "");
     if (dbstring.empty())
     {