LP 1819796: Fix method call on undefined value in generate_fines

LP 1819796: Fix method call on undefined value in generate_fines

The below message repeats in the open-ils.storage_stderr.log:

Caught error from 'run' method: Can't call method "search_where" on an
undefined value at
/usr/local/share/perl/5.26.1/OpenILS/Application/Storage/Publisher/action.pm
line 1014.

This commit removes an errant ->search_where on a CStoreEditor call to
make that message go away.

Also, delete some lines of code that were commented out at the time the
code was converted to use CStoreEditor.

Signed-off-by: Jason Stephenson <jason@sigio.com>
Signed-off-by: Dan Wells <dbw2@calvin.edu>