tools: Remove the symcryptrun tool.
* tools/symcryptrun.c: Remove. * tools/Makefile.am: Ditto. * doc/tools.texi: Remove man page. * configure.ac: Remove build option and tests used only by this tool. * Makefile.am (AM_DISTCHECK_CONFIGURE_FLAGS): Do not build symcryptrun.
symcryptrun is too ancient to be of any use and has not been tested in
many years. Thus we should not distribute it anymore.