remove ThemeImageProvider

packages/app/src/components/Theme/utils/ThemeImageProvider.tsx

@@ -1,14 +0,0 @@
-import { GrowiThemes } from '~/interfaces/theme';
-import { Themes } from '~/stores/use-next-themes';
-
-import { getBackgroundImageSrc as getWoodBackgroundImageSrc } from '../ThemeWood';
-
-export const getBackgroundImageSrc = (theme: GrowiThemes | undefined, colorScheme: Themes | undefined): string | undefined => {
-  if (theme == null || colorScheme == null) {
-    return undefined;
-  }
-  switch (theme) {
-    default:
-      return undefined;
-  }
-};