Remove range_query::get_value_range.

Remove range_query::get_value_range.

gcc/ChangeLog:

	* gimple-array-bounds.cc (array_bounds_checker::get_value_range):
	Add irange argument.
	(check_out_of_bounds_and_warn): Remove check for vr.
	(array_bounds_checker::check_array_ref): Remove pointer qualifier
	for vr and adjust accordingly.
	* gimple-array-bounds.h (get_value_range): Add irange argument.
	* value-query.cc (class equiv_allocator): Delete.
	(range_query::get_value_range): Delete.
	(range_query::range_query): Remove allocator access.
	(range_query::~range_query): Same.
	* value-query.h (get_value_range): Delete.
	* vr-values.cc
	(simplify_using_ranges::op_with_boolean_value_range_p): Remove
	call to get_value_range.
	(check_for_binary_op_overflow): Same.
	(simplify_using_ranges::legacy_fold_cond_overflow): Same.
	(simplify_using_ranges::simplify_abs_using_ranges): Same.
	(simplify_using_ranges::simplify_cond_using_ranges_1): Same.
	(simplify_using_ranges::simplify_casted_cond): Same.
	(simplify_using_ranges::simplify_switch_using_ranges): Same.
	(simplify_using_ranges::two_valued_val_range_p): Same.