Revert "feat: add Linq channel — real iMessage via API, no Mac required"

This reverts commit d4a142fd8f.

src/plugin-sdk/index.ts

@@ -123,7 +123,6 @@ export {
   DiscordConfigSchema,
   GoogleChatConfigSchema,
   IMessageConfigSchema,
-  LinqConfigSchema,
   MSTeamsConfigSchema,
   SignalConfigSchema,
   SlackConfigSchema,
@@ -456,14 +455,5 @@ export {
 } from "../line/markdown-to-line.js";
 export type { ProcessedLineMessage } from "../line/markdown-to-line.js";
 
-// Channel: Linq
-export {
-  listLinqAccountIds,
-  resolveDefaultLinqAccountId,
-  resolveLinqAccount,
-  type ResolvedLinqAccount,
-} from "../linq/accounts.js";
-export type { LinqProbe } from "../linq/types.js";
-
 // Media utilities
 export { loadWebMedia, type WebMediaResult } from "../web/media.js";