Ignore failing row decryption during data removal
Ignore failing row decryption during data removal

[Problem] When data is removed we don't know the custom user password used to
protect the row. The row decryption is performed with empty password and may
fail.
[Solution] Because row will be deleted we can ignore the failing decryption.
This is a temporary solution. It won't work for tz-store. The problem will be
fixed when new encryption is applied.

[Verification] Run TCT tests.

Change-Id: I9c24704a83c5511bd53218738460f2b546c3dd05

Samsung/ckm,Samsung/ckm,Samsung/ckm