[Achievements]Reduce amount of functions in retro_achievements files

src/main.c

@@ -5680,7 +5680,7 @@ void se_draw_menu_panel(){
       char login_info_path[SB_FILE_PATH_SIZE];
       snprintf(login_info_path,SB_FILE_PATH_SIZE,"%sra_login_info.txt",se_get_pref_path());
       remove(login_info_path);
-      ra_logout();
+      rc_client_logout(ra_get_client());
     }
     if (ra_info.achievement_list){
       for (int i = 0; i < ra_info.achievement_list->num_buckets; i++){

src/retro_achievements.cpp

@@ -69,7 +69,6 @@ static void server_callback(const rc_api_request_t* request,
   // RetroAchievements may not allow hardcore unlocks if we don't properly identify ourselves.
   const char* user_agent = "SkyEmu/4.0";
 
-  // TODO: with C++17 we can use structured bindings
   auto pair = split_url(request->url);
   std::string host = pair.first;
   std::string query = pair.second;
@@ -126,11 +125,6 @@ void ra_shutdown_client()
   }
 }
 
-bool ra_is_logged_in()
-{
-  return rc_client_get_user_info(ra_client) != NULL;
-}
-
 void ra_login_credentials(const char* username, const char* password, rc_client_callback_t login_callback)
 {
   rc_client_begin_login_with_password(ra_client, username, password, login_callback, NULL);
@@ -181,11 +175,6 @@ void ra_login_token(const char* username, const char* token, rc_client_callback_
   login_thread.detach();
 }
 
-void ra_logout()
-{
-  rc_client_logout(ra_client);
-}
-
 void ra_load_game(const uint8_t *rom, size_t rom_size, int console_id, rc_client_callback_t callback)
 {
   std::thread load_game_thread([](const uint8_t *rom, size_t rom_size, int console_id, rc_client_callback_t callback){

src/retro_achievements.h

@@ -11,13 +11,11 @@ typedef uint32_t (*rc_client_read_memory_func_t)(uint32_t address, uint8_t* buff
 typedef void (*rc_client_callback_t)(int result, const char* error_message, rc_client_t* client, void* userdata);
 typedef void(*get_image_callback_t)(const uint8_t* buffer, size_t buffer_size, int width, int height, void* userdata);
 
-bool ra_is_logged_in();
 void ra_initialize_client(rc_client_read_memory_func_t memory_read_func);
 void ra_login_credentials(const char* username, const char* password, rc_client_callback_t login_callback);
 void ra_login_token(const char* username, const char* token, rc_client_callback_t login_callback);
 void ra_poll_requests();
 void ra_shutdown_client();
-void ra_logout();
 void ra_load_game(const uint8_t* rom, size_t rom_size, int console_id, rc_client_callback_t callback);
 void ra_get_image(const char* url, get_image_callback_t callback, void* userdata);
 rc_client_t* ra_get_client();