remove unused imports

src/img2pdf.py

@@ -20,7 +20,6 @@
 import sys
 import zlib
 import argparse
-import struct
 from PIL import Image
 from datetime import datetime
 from jp2 import parsejp2

src/jp2.py

@@ -20,7 +20,6 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 import struct
-import sys
 
 def getBox(data, byteStart, noBytes):
     boxLengthValue = struct.unpack(">I", data[byteStart:byteStart+4])[0]

src/tests/__init__.py

@@ -1,8 +1,6 @@
 import unittest
 
-import datetime
 import os
-import unittest
 import img2pdf
 import zlib
 from PIL import Image