fix imports

pythonProject/sign.py

@@ -4,11 +4,10 @@ from typing import Optional
 
 from pyhanko import stamp
 from pyhanko.pdf_utils.incremental_writer import IncrementalPdfFileWriter
-from pyhanko.sign import signers, timestamps, fields
-from pyhanko_certvalidator import ValidationContext
+from pyhanko.sign import signers, fields
 from typing_extensions import Buffer
 
-from pythonProject.timestamp import LocalOpensslTimestamp
+from timestamp import LocalOpensslTimestamp
 
 
 class SignOrchestrator: