Remove BROKEN-macppc for math/libqalculate

Hi ports,

I've built libqalculate without any modifications to the port with
ports-gcc-4.9 on macppc. It was the last obstacle in order to get KDE4
building and working on my box [1].

Any comments and feedback are welcome!

Charlène.

[1] https://bsd.network/@julianaito/101505387260837132



Index: Makefile
===================================================================
RCS file: /cvs/ports/math/libqalculate/Makefile,v
retrieving revision 1.15
diff -u -p -r1.15 Makefile
--- Makefile 14 Nov 2018 20:48:21 -0000 1.15
+++ Makefile 30 Jan 2019 11:55:50 -0000
@@ -1,6 +1,5 @@
# $OpenBSD: Makefile,v 1.15 2018/11/14 20:48:21 sthen Exp $

-BROKEN-macppc = libqalculate/Calculator.cc:7030: internal compiler error
COMMENT = applied math library
CATEGORIES = math devel
DISTNAME = libqalculate-0.9.7