software/erp5testnode: don't install erp5[benchmark]

this is not used here and pulls many dependencies that we don't need

software/erp5testnode/software.cfg

@@ -28,7 +28,7 @@ part = python3
 [eggs]
 recipe = zc.recipe.egg
 eggs =
-  erp5.util[testnode,benchmark]
+  erp5.util[testnode]
   ${lxml-python:egg}
 
 
@@ -41,20 +41,3 @@ output = ${buildout:directory}/template.cfg
 recipe = slapos.recipe.template
 url = ${:_profile_base_location_}/${:filename}
 output = ${buildout:directory}/template-default.cfg.jinja
-
-[versions]
-dnspython = 1.15.0
-PyXML = 0.8.5
-WebOb = 1.8.5
-WebTest = 2.0.33
-soupsieve = 1.8
-waitress = 1.4.4
-z3c.etestbrowser = 3.0.1
-zope.testbrowser = 5.3.2
-WSGIProxy2 = 0.4.6
-beautifulsoup4 = 4.7.1
-zope.cachedescriptors = 4.3.1
-zope.event = 4.4
-zope.schema = 4.9.3
-zope.deferredimport = 4.3.1
-zope.proxy = 4.3.5