path solver: Revert computation of ranges in gimple order.

path solver: Revert computation of ranges in gimple order.

Revert the patch below, as it may slow down compilation with large CFGs.

	commit 8acbd7bef6edbf537e3037174907029b530212f6
	Author: Aldy Hernandez <aldyh@redhat.com>
	Date:   Wed Nov 24 09:43:36 2021 +0100

	    path solver: Compute ranges in path in gimple order.

gcc/ChangeLog:

	* gimple-range-path.cc (path_range_query::compute_ranges_defined): Remove.
	(path_range_query::compute_ranges_in_block): Revert to bitmap order.
	* gimple-range-path.h: Remove compute_ranges_defined.