remove obsolete mkshort test. (#1340)

The macro TEST_MKSHORT hasn't existed for some time.

diff --git a/tools/mk_short_test b/tools/mk_short_test
deleted file mode 100755 (executable)
index 6f7281c..0000000
--- a/tools/mk_short_test
+++ /dev/null
@@ -1,38 +0,0 @@
-#
-# Definitely a kludge, but build mkshort in a way that the output can be run
-# and visually inspected. Unlikely to work for anyone but robert.
-#
-
-c++ \
-  -DTEST_MKSHORT \
-  -DCSVFMTS_ENABLED \
-  -DFILTERS_ENABLED \
-  -DHAVE_LIBUSB_1_0 \
-  -DLIBUSB_H_INCLUDE=\"mac/libusb/libusb.h\" \
-  -DMAXIMAL_ENABLED \
-  -DQT_CORE5COMPAT_LIB \
-  -DQT_CORE_LIB \
-  -DQT_NO_DEBUG \
-  -DSHAPELIB_ENABLED \
-  -I. \
-  -isystem /opt/homebrew/opt/qt/lib/QtCore.framework/Headers -iframework /opt/homebrew/opt/qt/lib -isystem /opt/homebrew/opt/qt/share/qt/mkspecs/macx-clang -isystem /opt/homebrew/opt/qt/include -isystem /opt/homebrew/opt/qt/lib/QtCore5Compat.framework/Headers -arch arm64 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX13.1.sdk \
-  -Wall \
-  -Wsign-compare \
-  -std=gnu++17 \
-  -Winvalid-pch \
-  -Xarch_arm64 \
-  -include/Users/robertlipe/src/gpsbabel/CMakeFiles/gpsbabel.dir/cmake_pch_arm64.hxx \
-   -o short_test \
-   mkshort.cc util.cc fatal.cc \
-  -F/opt/homebrew/opt/qt/lib \
-  -Wl,-rpath,/opt/homebrew/opt/qt/lib /opt/homebrew/opt/qt/lib/QtCore5Compat.framework/Versions/A/QtCore5Compat libshp.a \
-  libz.a libusb-1.0.a \
-  /opt/homebrew/opt/qt/lib/QtCore.framework/Versions/A/QtCore \
-  -framework DiskArbitration -lobjc \
-  -framework IOKit \
-  -framework CoreFoundation \
-  -framework Security
-
-
-#   -MD -MT CMakeFiles/gpsbabel.dir/mkshort.cc.o \
-#   -MF CMakeFiles/gpsbabel.dir/mkshort.cc.o.d \