Remove invalid Discord ID for ihrpr

The Discord ID 1086709448816468038 is not a member of the MCP Discord
server, causing deploy failures with 'Unknown Member (code: 10007)'

Claude-Generated-By: Claude Code (cli/claude-opus-4-5=100%)
Claude-Steers: 1
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src/config/users.ts

@@ -178,7 +178,6 @@ export const MEMBERS: readonly Member[] = [
   },
   {
     github: 'ihrpr',
-    discord: '1086709448816468038',
     memberOf: [
       ROLE_IDS.MAINTAINERS,
       ROLE_IDS.DOCS_MAINTAINERS,