Remove unfinished, unused support for 'autodep:' lines in setup.ini

Remove unfinished, unused support for 'autodep:' lines in setup.ini

This effectively reverts the parts of commits
9b98ba2301658c34d0e9c3fd4bbd964ce52ef8ae and
dd15057d785045dfc1395ed5f39c84bcdcb88b13 which add that.

	* IniDBBuilder.h (IniDBBuilder::autodep): Remove.
	* IniDBBuilderPackage.cc (IniDBBuilderPackage::autodep): Remove.
	* IniDBBuilderPackage.h (IniDBBuilderPackage::autodep): Remove.
	* cygpackage.cc (cygpackage::set_autodep): Remove.
	* cygpackage.h (cygpackage::set_autodep): Remove.
	* inilex.ll: Remove autodep.
	* iniparse.yy: Remove autodep.
	* package_version.cc (packageversion::set_autodep): Remove.
	* package_version.h (packageversion::set_autodep): Remove.

Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>