Removing outdated STS code owners and adding one that was missing am: 25018c78e0 am: c3d277a0f4

Original change: https://googleplex-android-review.googlesource.com/c/platform/cts/+/15729185

Change-Id: I6cb08478eeebcfe91cf90eee3bc45f08d2d8c712
diff --git a/hostsidetests/securitybulletin/OWNERS b/hostsidetests/securitybulletin/OWNERS
index 056fbe6..5e566ca 100644
--- a/hostsidetests/securitybulletin/OWNERS
+++ b/hostsidetests/securitybulletin/OWNERS
@@ -1,6 +1,5 @@
 # Bug component: 36824
-mspector@google.com
-manjaepark@google.com
+musashi@google.com
 cdombroski@google.com
 lgallegos@google.com
 hubers@google.com