Correct shebang and remove coding from all tests

Author: pkess

test/test_bit_timing.py

@@ -1,3 +1,5 @@
+#!/usr/bin/env python
+
 import can
 
 

test/test_cantact.py

@@ -1,5 +1,4 @@
 #!/usr/bin/env python
-# coding: utf-8
 
 """
 Tests for CANtact interfaces

test/test_cyclic_socketcan.py

@@ -1,3 +1,5 @@
+#!/usr/bin/env python
+
 """
 This module tests multiple message cyclic send tasks.
 """

test/test_detect_available_configs.py

@@ -1,5 +1,4 @@
 #!/usr/bin/env python
-# coding: utf-8
 
 """
 This module tests :meth:`can.BusABC._detect_available_configs` and

test/test_interface_ixxat.py

@@ -1,3 +1,5 @@
+#!/usr/bin/env python
+
 """
 Unittest for ixxat interface.
 

test/test_interface_ixxat_fd.py

@@ -1,3 +1,5 @@
+#!/usr/bin/env python
+
 """
 Unittest for ixxat interface using fd option.
 

test/test_load_file_config.py

@@ -1,5 +1,4 @@
 #!/usr/bin/env python
-# coding: utf-8
 
 import shutil
 import tempfile

test/test_logger.py

@@ -1,5 +1,4 @@
 #!/usr/bin/env python
-# coding: utf-8
 
 """
 This module tests the functions inside of logger.py

test/test_message_class.py

@@ -1,5 +1,4 @@
 #!/usr/bin/env python
-# coding: utf-8
 
 import unittest
 import sys

test/test_message_filtering.py

@@ -1,5 +1,4 @@
 #!/usr/bin/env python
-# coding: utf-8
 
 """
 This module tests :meth:`can.BusABC._matches_filters`.