core: Removed the ResXResourceReader class

Removed the class ResXResourceReader from the compat module, this class
was used to load the audit log messages from the properties file, it was
used only in AuditLogDirector, the logic in the class was improved and moved
to a method inside AuditLogDirector


Change-Id: If60caa71d0b66d79279409ca534a419b89dcba75
Signed-off-by: Tal Nisan <tnisan@redhat.com>