[initial-letter] Merge RTL tests into variants
Following up crrev.com/c/5896658, this patch merges RTL tests into
wpt variants, so that the differences in the tests are more visible.
Also removed a left over in initial-letter-raise-initial-ref.html that
ran the script twice.
This patch has no behavior changes.
Change-Id: I0920c29f7f22aa25c487262be3232c95a28ef2a9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5907026
Commit-Queue: Kent Tamura tkent@chromium.org
Auto-Submit: Koji Ishii kojii@chromium.org
Reviewed-by: Kent Tamura tkent@chromium.org
Cr-Commit-Position: refs/heads/main@{#1364811}