Remove the CSV that has a mapping of property codes and locations. Nuke the property data migrations tasks.

This reverts commit f7bd812b06545f755ae13614e4884996d4a1c00e.

Conflicts:
	lib/tasks/property_data.rake
Add importer rake tasks
Add abandoned properties questions
Remove obsolete tasks
Seed voice files that should always be present in the system
Merge pull request #161 from codeforamerica/revert-property-codes

Prune Rake tasks and data