Remove stale port of testu01

The build errors remained unattended since almost a year.

Fixes #171

ports/testu01.hash

@@ -1 +0,0 @@
-b8791d6cfc4416dbc436130c4e755fe3cfcb157d

ports/testu01.port

@@ -1,40 +0,0 @@
-LICENSE := other
-VERSION := 1.2.3
-DOWNLOADS := testu01.archive
-
-URL(testu01) := http://www.iro.umontreal.ca/~simardr/testu01/TestU01.zip
-SHA(testu01) := eee829985b7a41427e224dbc3d2592dc88444dfab0acd269190c4ea83ab1a037
-DIR(testu01) := src/lib/testu01
-
-TESTU01_DIR := src/lib/testu01/TestU01-1.2.3
-
-testu01_includes = $(addprefix $(TESTU01_DIR)/testu01/,\
-	unif01.h ulcg.h umrg.h ucarry.h utaus.h ugfsr.h uinv.h uquad.h ucubic.h ulec.h utezuka.h umarsa.h uweyl.h uknuth.h uwu.h unumrec.h uvaria.h usoft.h ugranger.h ucrypto.h ufile.h udeng.h utouzin.h uautomata.h uxorshift.h ubrent.h rijndael-alg-fst.h tu01_sha1.h scatter.h swrite.h sres.h smultin.h sknuth.h smarsa.h sstring.h svaria.h snpair.h swalk.h sentrop.h sspectral.h scomp.h sspacings.h vectorsF2.h bbattery.h ffam.h fcong.h ffsr.h ftab.h fres.h fcho.h fmultin.h fmarsa.h fknuth.h fwalk.h fstring.h fspectral.h fvaria.h fnpair.h)
-
-probdist_includes = $(addprefix $(TESTU01_DIR)/probdist/,\
-	fmass.h fdist.h fbar.h finv.h gofs.h gofw.h statcoll.h wdist.h)
-
-mylib_includes = $(addprefix $(TESTU01_DIR)/mylib/,\
-	gdef.h addstr.h bitset.h chrono.h mystr.h num.h num2.h tables.h util.h)
-
-DIRS := include/testu01
-DIR_CONTENT(include/testu01) = $(generated_headers)
-
-generated_headers = $(testu01_includes) $(probdist_includes) $(mylib_includes)
-
-_dirs: $(generated_headers)
-
-$(generated_headers): $(DOWNLOADS)
-
-%.h: %.tex tcode
-	@$(MSG_GENERATE)$(notdir $@)
-	$(VERBOSE)mkdir -p include/testu01
-	$(VERBOSE)./tcode $< $@
-
-%.tex: $(DOWNLOADS)
-
-tcode: $(TESTU01_DIR)/mylib/tcode.c
-	@$(MSG_GENERATE)$(notdir $@)
-	$(VERBOSE)$(CC) -o $@ $<
-
-tcode.c: $(DOWNLOADS)