Remove the old problems lists implementation

We need to remove the old problem lists implementation from the core platform. This will be replaced with condition lists.
Remove ActiveListService.java, ActiveListServiceImpl.java, ActiveListServiceTest.java, ActiveListTest.xml, Problem.java, Allergy.java, AllergySeverity.java, AllergyType.java, AllergySeverity.java, ActiveListItem.java, ActiveListType.java, ProblemModifier.java, ActiveListAllergy.hbm.xml, ActiveListItem.hbm.xml, ActiveListProblem.hbm.xml, ActiveListType.hbm.xml
ProblemListItem.java, ActiveListWidget.java, ActiveListDAO.java, HibernateActiveListDAO.java

Delete the entire org.openmrs.activelist package

In liquibase-core-data.xml remove the changeset with id "20110915-0848"

Remove all active list changeset from liquibase-schema-only.xml. That is changesets with ids: "20110915-1215", "20110915-0825", "20110915-0845", "20110915-0847", "20110915-0823", "20110915-0824", "20110915-0836", "20110915-0837", "20110915-0838", "20110915-0839", "20110915-0840", "20110915-0841", "20110915-0842", "20110915-0846"

From liquibase-update-to-latest.xml remove changesets with ids: "20100525-818-1", "20100525-818-1-fix", "20100525-818-2", "20100525-818-2-fix", "20100525-818-3", "20100525-818-4", "20100525-818-5", "201410291616-TRUNK-3474"

You would also need to remove ActiveListTypeResource1_8.java, ProblemResource1_9.java, ProblemResource1_8.java, BaseActiveListItemResource1_8.java, ProblemResource1_8Test.java, ProblemController1_8Test, customActiveListTest.xml, ProblemController1_9Test from the REST web services module https://github.com/openmrs/openmrs-module-webservices.rest

After doing all the above, remember to run the mvn clean install and ensure that all tests are passing. Also run the web application to ensure that all is well and you are able to login.

https://wiki.openmrs.org/display/docs/Allergy+and+Problem+Lists
http://blog.burkeware.com/2009/04/active-lists-in-openmrs/