Description of problem:
Create a nodejs-0.6 app, add some modules like "optimist" to the dependencies in package.json and git push all the changes. optimist will be installed. Touch force_clean_build marker, remove "optimist" from package.json and git push. optimist still exists in $OPENSHIFT_GEAR_DIR/repo/node_modules/ and still can be used.

Version-Release number of selected component (if applicable):
devenv_1912

How reproducible:
Always

Steps to Reproduce:
1.Create a nodejs-0.6 app
2.Add optimist to dependencies in package.json:
  "dependencies": {
      "optimist": "0.3.4"
  },
3.Add 1 line to <git_repo>/server.js
var argv    = require('optimist').argv;
4.Git push all the changes.
5.Touch force_clean_build marker.
$ touch .openshift/markers/force_clean_build
6.Remove optimist from package.json and git push all the changes.
7.Log in the app using Openshift Shell and check $OPENSHIFT_GEAR_DIR/repo/node_modules/. Check the app.
  
Actual results:
7.optimist still exists under $OPENSHIFT_GEAR_DIR/repo/node_modules/.
The app is still available.

Expected results:
7.optimist should be removed from $OPENSHIFT_GEAR_DIR/repo/node_modules/.
The app should be unavailable because module "optimist" not found.

Additional info: