port/PyAssimp/pyassimp/: remove several unised imports

port/PyAssimp/scripts/fixed_pipeline_3d_viewer.py

@@ -24,12 +24,13 @@ This sample is based on several sources, including:
  - ASSIMP's C++ SimpleOpenGL viewer
 """
 
-import os, sys
+import sys
 from OpenGL.GLUT import *
 from OpenGL.GLU import *
 from OpenGL.GL import *
 
-import logging;logger = logging.getLogger("pyassimp_opengl")
+import logging
+logger = logging.getLogger("pyassimp_opengl")
 logging.basicConfig(level=logging.INFO)
 
 import math

port/PyAssimp/scripts/sample.py

@@ -5,7 +5,7 @@
 This module demonstrates the functionality of PyAssimp.
 """
 
-import os, sys
+import sys
 import logging
 logging.basicConfig(level=logging.INFO)
 

scripts/StepImporter/ExpressReader.py

@@ -43,7 +43,8 @@
 """Parse an EXPRESS file and extract basic information on all
 entities and data types contained"""
 
-import sys, os, re
+import sys
+import re
 from collections import OrderedDict
 
 re_match_entity = re.compile(r"""