Remove broken test
See: http://lists.xiph.org/pipermail/celt-dev/2010-November/000519.html

--- tests/Makefile.in.orig	Thu Dec  2 11:12:18 2010
+++ tests/Makefile.in	Thu Dec  2 11:13:04 2010
@@ -36,7 +36,7 @@ build_triplet = @build@
 host_triplet = @host@
 TESTS = type-test$(EXEEXT) ectest$(EXEEXT) cwrs32-test$(EXEEXT) \
 	dft-test$(EXEEXT) laplace-test$(EXEEXT) mdct-test$(EXEEXT) \
-	mathops-test$(EXEEXT) tandem-test$(EXEEXT)
+	mathops-test$(EXEEXT)
 noinst_PROGRAMS = type-test$(EXEEXT) ectest$(EXEEXT) \
 	cwrs32-test$(EXEEXT) dft-test$(EXEEXT) laplace-test$(EXEEXT) \
 	mdct-test$(EXEEXT) mathops-test$(EXEEXT) tandem-test$(EXEEXT)