chore: temporarily remove pg-meta codeowners (supabase#44577)

See https://supabase.slack.com/archives/C0161K73J1J/p1775482643470329
for context.

## Summary by CodeRabbit

This change is an internal configuration update with no user-facing
impact. It does not require release notes for end-users.

Author: charislam

.github/CODEOWNERS

@@ -3,7 +3,7 @@
 /packages/shared-data/plans.ts @supabase/billing
 /packages/common/telemetry-constants.ts @supabase/growth-eng
 /packages/dev-tools/ @supabase/growth-eng
-/packages/pg-meta @supabase/postgres @avallete
+# /packages/pg-meta @supabase/postgres @avallete
 /packages/ui-patterns @supabase/design
 
 /apps/studio/ @supabase/Dashboard