2017-09-21  Evgeny Kudryashov <kudryashov@ispras.ru>

	* cgraph.c (delete_function_version): New, broken out from...
	(cgraph_node::delete_function_version): ...here.  Rename to
	cgraph_node::delete_function_version_by_decl.  Update all uses.
	(cgraph_node::remove): Call delete_function_version.

From-SVN: r253066