caddy-frontend: Drop node.js

It is not needed on the frontend, as websocket frontend can easily expose
node.js backends.

software/caddy-frontend/common.cfg

@@ -11,7 +11,6 @@ extends =
   ../../component/6tunnel/buildout.cfg
   ../../component/xz-utils/buildout.cfg
 
-  ../../stack/nodejs.cfg
   ../../stack/caucase/buildout.cfg
 # Monitoring stack (keep on bottom)
   ../../stack/monitor/buildout.cfg
@@ -24,9 +23,6 @@ parts +=
 
   logrotate
   rdiff-backup
-  npm-modules
-  proxy-by-url
-  http-proxy
   caddyprofiledeps
 
   kedifa-develop
@@ -260,33 +256,3 @@ filename = validate-script.sh.in
 [template-configuration-state-script]
 <=download-template
 filename = configuration-state-script.sh.in
-
-# Migrated from KVM recipe
-[http-proxy]
-# https://github.com/nodejitsu/node-http-proxy
-recipe = slapos.recipe.build:download-unpacked
-# use upstream when merged
-url = https://lab.nexedi.com/nexedi/node-http-proxy/repository/archive.zip?ref=a5d3aff428ee8d840068b439f6ce121077f1144f
-md5sum = 65602466066444c718215de41f546585
-
-[proxy-by-url]
-# https://github.com/dominictarr/proxy-by-url
-recipe = slapos.recipe.build:download-unpacked
-# use upstream when merged
-url = https://lab.nexedi.com/nexedi/proxy-by-url/repository/archive.zip?ref=59fcb11a3e00c45b4b0362e76f29653abb313072
-md5sum = c383e0c5ff31b56f7987466e8304c941
-
-[npm-modules]
-recipe = plone.recipe.command
-destination = ${buildout:parts-directory}/${:_buildout_section_name_}
-location = ${buildout:parts-directory}/${:_buildout_section_name_}
-command =
-  export HOME=${:location};
-  rm -fr ${:destination} &&
-  mkdir -p ${:destination} &&
-  cd ${:destination} &&
-  ${nodejs:location}/bin/node ${nodejs:location}/bin/npm install colors@0.6.0-1 &&
-  ${nodejs:location}/bin/node ${nodejs:location}/bin/npm install socket.io@0.8.7 &&
-  ${nodejs:location}/bin/node ${nodejs:location}/bin/npm install socket.io-client@0.8.7 &&
-  ${nodejs:location}/bin/node ${nodejs:location}/bin/npm install optimist@0.3.1 &&
-  ${nodejs:location}/bin/node ${nodejs:location}/bin/npm install pkginfo@0.2.3