remove unused public assets, serve OG image locally

Author: adibarra

packages/app/public/file.svg

@@ -6,5 +6,4 @@ export const AUTHOR_HANDLE = '@semianalysis';
 export const SITE_TITLE = `${SITE_NAME} by ${AUTHOR_NAME} — AI Inference Benchmark`;
 export const DESCRIPTION =
   'InferenceX (formerly InferenceMAX) is the open-source AI inference benchmark that matches the rapid pace of modern AI development. Powered by one of the largest open-source GPU CI/CD fleets with NVIDIA GB200, AMD MI355X & many more.';
-export const OG_IMAGE =
-  'https://semianalysis.com/wp-content/themes/semianalysis/assets/img/sharecard-default.png';
+export const OG_IMAGE = `${SITE_URL}/og-image.png`;