std::slices: add the SortFunc function

std/slices/slices.jule

@@ -2,27 +2,6 @@
 // Use of this source code is governed by a BSD 3-Clause
 // license that can be found in the LICENSE file.
 
-use bits for std::math::bits
-use cmp for std::internal::cmp
-
-// Sorts a slice of any ordered type in ascending order.
-// When sorting floating-point numbers, NaNs are ordered before other values.
-fn Sort[S: []E, E: ordered](mut s: S) {
-    n := len(s)
-    pdqsort(s, 0, n, bits::Len(uint(n)))
-}
-
-// Reports whether x is sorted in ascending order.
-fn IsSorted[S: []E, E: ordered](mut s: S): bool {
-    mut i := len(s) - 1
-    for i > 0; i-- {
-        if cmp::Less(s[i], s[i-1]) {
-            ret false
-        }
-    }
-    ret true
-}
-
 // Reports whether slices are the same length and contains same elements.
 // The nil slices considered as zero-length slices.
 // The floating-point NaNs are not considered equal.