Remove invalid map->terminate()

Map has already been destroyed by this point, so the
call is invalid. The work that terminate() would do
has already been done.

platform/default/glfw_view.cpp

@@ -8,7 +8,6 @@ GLFWView::GLFWView(bool fullscreen_) : fullscreen(fullscreen_) {
 }
 
 GLFWView::~GLFWView() {
-    map->terminate();
     glfwTerminate();
 }