Remove creation of use_webui_login from the Makefile
Remove creation of use_webui_login from the Makefile

BUG=chromium-os:22288
TEST=Manual, build image and confirm that WebUI Login still comes up

Change-Id: I0336b93a255db124218342f577c6c9dd7cb7a151
Reviewed-on: https://gerrit.chromium.org/gerrit/10899
Reviewed-by: Chris Masone <98e3d65c6b0e9e2391eb4c2e8b1e572b77e544ed@chromium.org>
Reviewed-by: Jon Kliegman <7addd549d0b04b2dc663a0a7eb2c1810caf11d96@chromium.org>
Commit-Ready: Ryan Harrison <f6e83b88f802fc4054f7d3d5ce45628543f8e7d9@chromium.org>
Tested-by: Ryan Harrison <f6e83b88f802fc4054f7d3d5ce45628543f8e7d9@chromium.org>

chadversary/chromiumos.platform.login_manager,chadversary/chromiumos.platform.login_manager,chadversary/chromiumos.platform.login_manager