Revert "fix: downloadBlob isn't working properly on some old browsers" (

#1709)

Reverts #1257.

Adding a delay to `revokeObjectURL` didn't help at all, as the original
issue was caused by an internal bug of `mark.via`. They have fixed the
issue in later versions.

extensions/files.js

@@ -235,10 +235,7 @@
   const downloadBlob = (blob, file) => {
     const url = URL.createObjectURL(blob);
     downloadURL(url, file);
-    // Some old browsers process Blob URLs asynchronously
-    setTimeout(() => {
-      URL.revokeObjectURL(url);
-    }, 1000);
+    URL.revokeObjectURL(url);
   };
 
   /**