Revert "template.py: Handle purposely raised exceptions in lookup()"

This reverts commit 2fda9bc743.

lib/ansible/utils/template.py

@@ -92,9 +92,6 @@ def lookup(name, *args, **kwargs):
         # safely catch run failures per #5059
         try:
             ran = instance.run(*args, inject=vars, **kwargs)
-        except errors.AnsibleError:
-            # Plugin raised this on purpose
-            raise
         except Exception, e:
             ran = None
         if ran: