This SELinux commit is too strict and we should only fail if trying to…

This SELinux commit is too strict and we should only fail if trying to read/tweak SELinux attributes else
python-selinux can't be installed w/ the yum module when missing.

Revert "Added an extra check for target nodes with selinux but without libselinux-python package installed"

This reverts commit 550986b6.

lib/ansible/module_common.py

@@ -84,9 +84,6 @@ try:
     import selinux
     HAVE_SELINUX=True
 except ImportError:
-    if os.path.exists("/selinux/enforce"):
-        sys.stderr.write('Error: ansible requires the package libselinux-python on nodes with selinux, none found!')
-        sys.exit(1)
     pass
 
 try: