Update app.py

app.py

@@ -92,8 +92,7 @@ def md5_hash(path):
      return hashlib.md5(content).hexdigest()
 '''
 
-example2='''You are a software engineer who is best in the world at summarizing code changes.
-Carefully analyze the given old code and new code and generate a summary of the changes.
+example2='''Carefully analyze the given old code and new code and generate a summary of the changes.
 
 Old Code: