specs: remove unused curses subdirectory paths.
specs: remove unused curses subdirectory paths.

* specs/spec_helper.lua (package.cpath): Remove unused curses
subdirectory paths.

Signed-off-by: Gary V. Vaughan <f9023000f29773649f3850298becb9544b5fd6a9@gnu.org>

zevv/luaposix,snegovick/luaposix,ardje/luaposix,rrthomas/luaposix,snegovick/luaposix,jimmyharris/luaposix,luaposix/luaposix,rrthomas/luaposix,jimmyharris/luaposix,zevv/luaposix,ardje/luaposix