tests: fix test_help

There is a return that got in there that makes the test inoperative.

Signed-off-by: Marti Bolivar <marti.bolivar@nordicsemi.no>

tests/test_help.py

@@ -6,9 +6,7 @@ from west.main import BUILTIN_COMMAND_NAMES
 from conftest import cmd
 
 def test_help(west_init_tmpdir):
-
     # Check that output from help is equivalent to -h
-    return
 
     h1out = cmd('help')
     h2out = cmd('-h')