Remove collations from generic ALTER test

Alvaro Herrera <alvherre@alvh.no-ip.org>

Commit: ece26987c20c679edde74775ef0c56bff32bd1bc
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Date: 2012-10-01T13:57:58Z
Releases: 9.3.0
Remove collations from generic ALTER test

The error messages they generate are not portable enough.

Also, since the only point of the alter_generic_1 expected file was to
cover platforms with no collation support, it's now useless, so remove
it.

Files