Revert "Rejoin args list into a string for run_command when using an unsafe shell"

This reverts commit 4273cb2d.

lib/ansible/module_utils/basic.py

@@ -1008,9 +1008,7 @@ class AnsibleModule(object):
 
         shell = False
         if isinstance(args, list):
-            if use_unsafe_shell:
-                args = " ".join([pipes.quote(x) for x in args])
-                shell = True
+            pass
         elif isinstance(args, basestring) and use_unsafe_shell:
             shell = True
         elif isinstance(args, basestring):