Removed the -x option from the test output

-x means "do not install scripts" and we're doing that now.
So the test needed to be adjusted.

src/zc/buildout/tests.py

@@ -97,7 +97,7 @@ We should be able to deal with setup scripts that aren't setuptools based.
     Installing...
     Develop: '/sample-buildout/foo'
     in: '/sample-buildout/foo'
-    ... -q develop -mxN -d /sample-buildout/develop-eggs/...
+    ... -q develop -mN -d /sample-buildout/develop-eggs/...
 
 
     """