This CL also removes "HasComplexElements" helpers on JSReceiver
and NumberDictionary.

Drive-by: Remove unused SmiLexicographicCompare runtime function.
The C++ funtion is still used, but it is entered using a fast
C call from Array#sort.

Bug: v8:9183
Change-Id: Ibb5d54cca623486806587bc90506af8d97910dc2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1617929
Commit-Queue: Simon Zünd <szuend@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Auto-Submit: Simon Zünd <szuend@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61644}