Revert "fix: resolve all ESLint errors in backend and frontend"

This reverts commit 07dfd7e840.

paperless-backend/src/preprocessing/pdf.service.ts

@@ -120,9 +120,7 @@ export class PdfService {
     for (const imgPath of imagePaths) {
       try {
         await fs.unlink(imgPath);
-      } catch {
-        // Datei bereits entfernt o. Ä.: ignorieren
-      }
+      } catch {}
       dirs.add(path.dirname(imgPath));
     }
     for (const dir of dirs) {