Remove inactive owners from /docs/standards/positions

Per discussion on the chromium-dev@ thread [1], we remove owners who made
0 commits / reviews to the Chromium repository in the past 12 months
(2021/7/26 - 2022/7/26).

For each owner removal, we upload a CL to remove the owner. The CL adds the
owner being removed and two other owners as reviewers. The CL will be
committed once it gets an LGTM from one of the reviewers.

Instructions:

- The guiding principle is: only owners who are meeting the owner's
expectations [2] should be written in OWNERS files. This is important to
ensure that developers can find active owners by looking at the OWNERS files.
- Please LGTM or not-LGTM the CL based on the removal guideline [3]. i.e.,
if the owner being removed was inactive only for a certain period of time
while they were on a long leave and has been meeting the owner's expectations
in other times, please not-LGTM the CL. Otherwise, please LGTM the CL.
- If the CL was LGTMed and landed by mistake (e.g., the reviewer was not aware
of the owner's leave status), we can just revert the CL.
- If you have any questions / comments, please send an explicit email to
haraken@chromium.org. (haraken@ is not watching all the comments of all the
removal CLs :-) If there is any disagreement between owners, it will be
escalated to Chrome Eng Review and resolved per [3].

[1] https://groups.google.com/a/chromium.org/g/chromium-dev/c/aGC8BTTFK64
[2] https://chromium.googlesource.com/chromium/src/+/main/docs/code_reviews.md#expectations-of-owners
[3] https://chromium.googlesource.com/chromium/src/+/main/docs/code_reviews.md#removal-of-owners

This CL was uploaded by git cl split.

R=chrishtr@chromium.org, rego@igalia.com, sshruthi@chromium.org

Bug: 1355150
Change-Id: I0ac6107cf1465648550665ee7d4339a368a5a61c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3845092
Reviewed-by: Chris Harrelson <chrishtr@chromium.org>
Commit-Queue: Kentaro Hara <haraken@chromium.org>
Auto-Submit: Kentaro Hara <haraken@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1038602}

docs/standards/positions/OWNERS

@@ -2,7 +2,6 @@
 # the READMEs; they do not approve the positions themselves.
 
 jyasskin@chromium.org
-sshruthi@chromium.org
 
 # Override the OWNERS: * from the parent directory.
 set noparent