Delete fuzz-tester.php

It is unmaintained, not up to coding standards, and as far as I can tell
not actually used by anyone or anything.

Fuzz testing in and of itself may be useful and if someone is interested
they can write some code that's from this decade.

Change-Id: Iecde41daca95d1655fb8767a1e775cbb732184e9
Merge "Delete fuzz-tester.php"