Remove the GPL notice from the test
Remove the GPL notice from the test

The test-unique.c test/example is under the GPL, while the rest
of the codebase is under the LGPL. It is better to have the whole
codebase under a single license.

Thanks to Vincent Untz.

GNOME/unique,Distrotech/libunique,Distrotech/libunique,GNOME/unique,Distrotech/libunique,GNOME/unique