Remove old UI (#15414)

* Remove source code for old UI
* Rename ui-next to ui
* Remove license scan for javascript dependencies

.gitignore

@@ -20,23 +20,10 @@ awx/projects
 awx/job_output
 awx/public/media
 awx/public/static
-awx/ui/tests/test-results.xml
-awx/ui/client/src/local_settings.json
 awx/main/fixtures
 awx/*.log
 tower/tower_warnings.log
 celerybeat-schedule
-awx/ui/static
-awx/ui/build_test
-awx/ui/client/languages
-awx/ui/templates/ui/index.html
-awx/ui/templates/ui/installing.html
-awx/ui/node_modules/
-awx/ui/src/locales/*/messages.js
-awx/ui/coverage/
-awx/ui/build
-awx/ui/.env.local
-awx/ui/instrumented
 rsyslog.pid
 tools/docker-compose/ansible/awx_dump.sql
 tools/docker-compose/Dockerfile
@@ -79,11 +66,6 @@ __pycache__
 /tmp
 **/npm-debug.log*
 
-# UI build flag files
-awx/ui/.deps_built
-awx/ui/.release_built
-awx/ui/.release_deps_built
-
 # Testing
 .cache
 .coverage
@@ -161,15 +143,14 @@ use_dev_supervisor.txt
 .idea/*
 *.unison.tmp
 *.#
-/awx/ui/.ui-built
 /_build/
 /_build_kube_dev/
 /Dockerfile
 /Dockerfile.dev
 /Dockerfile.kube-dev
 
-awx/ui_next/src
-awx/ui_next/build
+awx/ui/src
+awx/ui/build
 
 # Docs build stuff
 docs/docsite/build/