Remove redundant code and fix linting issues

Author: tyouwei

matching-service/src/lib/hasher.ts

@@ -3,7 +3,7 @@ import crypto from 'crypto';
 export const generateMatchId = (userId: string, matchId: string): string => {
     // Concatenate the IDs
     const combinedIds = `${userId}-${matchId}`;
-    
+
     // Hash the concatenated string using SHA-256
     return crypto.createHash('sha256').update(combinedIds).digest('hex');
-  };
+};