Removed test_libtriangles. I was under the mistaken impression is provided a...

Removed test_libtriangles. I was under the mistaken impression is provided a set of examples, so you could see at a glance the result of the code. This doesn't really need a test function.

test_libtriangles.scad

-//Copyright (C) 2013 Alex Davies
-//License: LGPL 2.1 or later
-use <libtriangles.scad>;
-
-//all of these follow the (X,Y,Z) syntax
-
-translate(v = [0, 0, 0])eqlpyramid(10,20,30);
-translate(v = [20, 0, 0]) rightpyramid(10,20,30);
-translate(v = [40, 0, 0]) cornerpyramid(10,20,30);
-translate(v = [60, 0, 0]) rightprism(10,20,30);
-translate(v = [80, 0, 0]) eqlprism(10,20,30);
-