Do not explicitly set mysql_engine

Setting the mysql_engine when creating a table is not needed
anymore as this is automatically done by an event listener
added with commit 466e89970f11918a809aafe8a048d138d4664299

Change-Id: I0df978dbf2bb44f17102da3c17fd4e93c9e4df8d
Closes-Bug: #1361176
Merge "Do not explicitly set mysql_engine"