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: Idb98261f8f2a8d87c4d84a19fde435039433bbf8
diff --git a/OWNERS b/OWNERS
index cf77f8d..c84d3c5 100644
--- a/OWNERS
+++ b/OWNERS
@@ -33,7 +33,6 @@
 
 owners:
 - patrick@stwcx.xyz
-- vishwa@linux.vnet.ibm.com
 
 reviewers:
 - jinu.joy.thomas@in.ibm.com
@@ -51,6 +50,3 @@
 - name: Patrick Williams
   email: patrick@stwcx.xyz
   discord: stwcx
-- name: Vishwanatha Subbanna
-  email: vishwa@linux.vnet.ibm.com
-  discord: vishwa