Those lines delete the DBs in:
File.DirDefaultExternal
File.DirInternal
You are working on the DB you initialized passing a path.
I have read many times questions like this; often the programmer has an error during initialization of the db (he checks the existence of the DB file, he wants to replace it with a new version, etc).
Here is what it HAS to be. There are two copies of the database. It's the only explanation. I was thinking the only copy was the db under the Files folder but there has to be one in the emulator.