Removed obsolete makefile rules

Removed test, test-report, full-report, perf-report.  They all come from
an old (now obsolete) approach toward glib testing[1]. Now the blessed
ways to test glib are 'make check' and installed tests.

[1]: https://mail.gnome.org/archives/gtk-devel-list/2007-November/msg00000.html

https://bugzilla.gnome.org/show_bug.cgi?id=709995