Revert "Preload extmainapps"

This reverts commit fc56e39075.

lib/flipper_application/flipper_application.c

@@ -236,15 +236,6 @@ FuriThread* flipper_application_spawn(FlipperApplication* app, void* args) {
     return app->thread;
 }
 
-void flipper_application_despawn(FlipperApplication* app) {
-    furi_check(app->thread != NULL);
-    furi_check(!flipper_application_is_plugin(app));
-
-    furi_thread_join(app->thread);
-    furi_thread_free(app->thread);
-    app->thread = NULL;
-}
-
 static const char* preload_status_strings[] = {
     [FlipperApplicationPreloadStatusSuccess] = "Success",
     [FlipperApplicationPreloadStatusUnspecifiedError] = "Unknown error",
@@ -298,4 +289,4 @@ const FlipperAppPluginDescriptor*
         lib_descriptor->ep_api_version);
 
     return lib_descriptor;
-}
+}

lib/flipper_application/flipper_application.h

@@ -107,19 +107,14 @@ FlipperApplicationLoadStatus flipper_application_map_to_memory(FlipperApplicatio
 
 /**
  * @brief Create application thread at entry point address, using app name and
- * stack size from metadata. Returned thread isn't started yet.
+ * stack size from metadata. Returned thread isn't started yet. 
+ * Can be only called once for application instance.
  * @param app Applicaiton pointer
  * @param args Object to pass to app's entry point
  * @return Created thread
  */
 FuriThread* flipper_application_spawn(FlipperApplication* app, void* args);
 
-/**
- * @brief Cleanup application in order to re-spawn later.
- * @param app Applicaiton pointer
- */
-void flipper_application_despawn(FlipperApplication* app);
-
 /**
  * @brief Check if application is a plugin (not a runnable standalone app)
  * @param app Application pointer