Remove vishwa from the maintainers list

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 - thankyou for your contributions to openbmc.

Change-Id: Idc8a428193e105ab1c25aab74ee9af39c9946784
Signed-off-by: Manojkiran Eda <manojkiran.eda@gmail.com>
diff --git a/OWNERS b/OWNERS
index 1a9336a..132e12c 100644
--- a/OWNERS
+++ b/OWNERS
@@ -33,7 +33,6 @@
 
 owners:
 - mine260309@gmail.com
-- vishwa@linux.vnet.ibm.com
 
 reviewers:
 - liuxiwei@ieisystem.com
@@ -51,6 +50,3 @@
 - name: Lei Yu
   email: mine260309@gmail.com
   discord: LeiYU
-- name: Vishwanatha Subbanna
-  email: vishwa@linux.vnet.ibm.com
-  discord: vishwa