MediaProvider: Fix where condition of delete queries

Commit 5835a6fccf5fec1a2829e1f ("Fix check for existence of parent")
extended the where clause without adjusting the where args, therefore
the where condition no longer works as intended. Adjust the where args
to fix this.

Change-Id: If87ed4a370522e8d36b5a5113c9abba340b81ff0
1 file changed