Remove legacy "ftpbin" target from top-level Makefile.am

[edhartnett]

In the top level Makfile.am we have this target, which I remember putting there years and years ago. It was for producing netCDF binary distributions.

# At Unidata, package up binaries.
ftpbin: install
	echo "Getting binaries from ${prefix}"
	ls -l ${prefix}
	echo "These are the binaries for netCDF @PACKAGE_VERSION@." > ${prefix}/README_BINARIES.txt
	echo "For this build: CC=$(CC) CXX=$(CXX)" >> ${prefix}/README_BINARIES.txt
	echo "CFLAGS=$(CFLAGS) CXXFLAGS=$(CXXFLAGS)" >> ${prefix}/README_BINARIES.txt
	echo "FCFLAGS=$(FCFLAGS) F77FLAGS=$(F77FLAGS) $F90FLAGS=$(F90FLAGS)" >> ${prefix}/README_BINARIES.txt
	which tar
	echo "PATH: $(PATH)"
	tar cf @BINFILE_NAME@ -C ${prefix} ${BINFILES}
	gzip -f @BINFILE_NAME@
	zip -j netcdf_${VERSION}.zip ${ZIPBINFILES}

@WardF do you still use this target? I believe not, since I see that Unidata no longer distributes binaries (except for Windows, which is done with the CMake build.)

So I will remove this.