Change deletion script to actually drop rather then truncate

This makes it work on sqlite as well

Change-Id: I8ab5c8d2d95a83c288db1e57690b21473a3b7199
Added ep_events table to deletion script

Change-Id: I472bcab186d8940af2c40921368fbbe8c0cba127
Merge "Added ep_events table to deletion script"