fix "stack/caucase,stack/erp5,software/caucase: Update for caucase 0.9.5"

The scripts are already provided in caucase-eggs part, there is no reason to
duplicate them here, so drop this entry.

/reviewed-on !579

stack/erp5/buildout.cfg

@@ -569,7 +569,6 @@ eggs = ${neoppod:eggs}
 # installation of python, which we don't want on an instance
 interpreter = ${buildout:python}
 scripts =
-  ${caucase-eggs:scripts}
   apachedex
   repozo
   runzope