Drop unused tbm_surface includes in tizen_renderer_egl

Also null-check the TizenWindow cast in TizenRenderer::CreateSurface.

Author: JSUYA

flutter/shell/platform/tizen/tizen_renderer.cc

@@ -12,8 +12,11 @@ namespace flutter {
 TizenRenderer::TizenRenderer() {}
 
 bool TizenRenderer::CreateSurface(TizenViewBase* view) {
-  TizenGeometry geometry = view->GetGeometry();
   auto* window = dynamic_cast<TizenWindow*>(view);
+  if (!window) {
+    return false;
+  }
+  TizenGeometry geometry = view->GetGeometry();
   return CreateSurface(window->GetRenderTarget(),
                        window->GetRenderTargetDisplay(), geometry.width,
                        geometry.height);

flutter/shell/platform/tizen/tizen_renderer_egl.cc

@@ -9,8 +9,6 @@
 #include <GLES2/gl2.h>
 #include <GLES2/gl2ext.h>
 #include <tbm_dummy_display.h>
-#include <tbm_surface.h>
-#include <tbm_surface_queue.h>
 
 #include "flutter/shell/platform/tizen/external_texture_pixel_egl.h"
 #include "flutter/shell/platform/tizen/external_texture_surface_egl.h"