Lint some modules

Author: rocky

mathics/builtin/base.py

@@ -21,7 +21,6 @@
     MachineReal,
     PrecisionReal,
     String,
-    ByteArrayAtom,
     Symbol,
     ensure_context,
     strip_context,

mathics/builtin/combinatorial.py

@@ -4,7 +4,6 @@
 """
 
 
-import math
 from sympy.functions.combinatorial.numbers import stirling
 from mathics.version import __version__  # noqa used in loading to check consistency.
 

mathics/builtin/comparison.py

@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
 

mathics/builtin/importexport.py

@@ -7,6 +7,7 @@
 from mathics.version import __version__  # noqa used in loading to check consistency.
 
 from mathics.core.expression import (
+    ByteArrayAtom,
     Expression,
     from_python,
     strip_context,
@@ -15,7 +16,6 @@
 )
 from mathics.builtin.base import (
     Builtin,
-    ByteArrayAtom,
     Predefined,
     String,
     Integer,