update pywps recipe

buildout.cfg

@@ -33,7 +33,7 @@ log-level = INFO
 #zc.buildout=2.2.5
 birdhousebuilder.recipe.conda = 0.2.2
 birdhousebuilder.recipe.docker = 0.2.1
-birdhousebuilder.recipe.pywps = 0.2.3
+birdhousebuilder.recipe.pywps = 0.2.4
 buildout.locallib = 0.3.1
 zc.recipe.egg = 2.0.1
 birdhousebuilder.recipe.nginx = 0.2.0
@@ -70,7 +70,6 @@ sites = hummingbird
 keywords = WPS, PyWPS, Birdhouse, Hummingbird, Python, CDO, CFChecker
 providerName = Birdhouse/Hummingbird
 providerSite = http://birdhouse-hummingbird.readthedocs.org/en/latest/
-proxyEnabled = ${settings:proxy-enabled}
 processesPath = ${buildout:directory}/processes
 hostname = ${settings:hostname}
 port = ${settings:http-port}