OWNERS: Remove Vishwa

Like https://gerrit.openbmc.org/c/openbmc/phosphor-time-manager/+/70003

Vishwa is no longer associated with IBM and appears to have disengaged
from OpenBMC since 2022. Furthermore, his inactivity on Discord suggests
a lack of interest in OpenBMC. Consequently, it seems appropriate to
remove him from the maintainers list.

Vishwa - Thank you for your contributions to OpenBMC!

Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
Change-Id: Ib7299470f384042db97c8aeb18747322f41c0a40
diff --git a/OWNERS b/OWNERS
index 82f884a..f45ad61 100644
--- a/OWNERS
+++ b/OWNERS
@@ -32,7 +32,6 @@
 # data within them will be kept sorted.
 
 owners:
-- vishwa@linux.vnet.ibm.com
 - wak@google.com
 
 reviewers:
@@ -40,9 +39,6 @@
 matchers:
 
 openbmc:
-- name: Vishwanatha Subbanna
-  email: vishwa@linux.vnet.ibm.com
-  discord: vishwa
 - name: William Kennington
   email: wak@google.com
   discord: wak