Replace soft_delete in volume_type_access_remove

Replace soft_delete in volume_type_access_remove

This commit replaces oslo.db's soft_delete used in
volume_type_access_remove in db.api with a simple update setting
deleted column to True.

As deleted column is boolean it is represented in the DB by TINYINT,
which max value is 127. This introduces problems when removing records
with id higher than that, because soft_delete sets deleted column to the
value of id. This commit fixes the issue and adds unit tests for such
case.

Change-Id: I484e66125b5a29f490c070696b336be4a2693b3e
Closes-Bug: 1496747