PEP8 clean up and trivial typo fixes

mayan/apps/converter/backends/python.py

@@ -15,14 +15,8 @@ from PIL import Image
 import sh
 
 from common.utils import fs_cleanup
-from mimetype.api import get_mimetype
 
 from ..classes import ConverterBase
-from ..exceptions import ConvertError, UnknownFileFormat
-from ..literals import (
-    DEFAULT_FILE_FORMAT, DEFAULT_PAGE_NUMBER, TRANSFORMATION_RESIZE,
-    TRANSFORMATION_ROTATE, TRANSFORMATION_ZOOM
-)
 from ..settings import PDFTOPPM_PATH
 
 try:
@@ -92,6 +86,3 @@ class Python(ConverterBase):
             pass
 
         return page_count
-
-
-