Merge pull request #17171 from IgniteUI/revert-17168-dmdimitrov/chat-export-21.0.x

Revert "fix(*): export chat in public api - 21.0.x"

Author: ChronosSF

projects/igniteui-angular/src/public_api.ts

@@ -34,7 +34,6 @@ export * from 'igniteui-angular/button-group';
 export * from 'igniteui-angular/calendar';
 export * from 'igniteui-angular/card';
 export * from 'igniteui-angular/carousel';
-export * from 'igniteui-angular/chat';
 export * from 'igniteui-angular/checkbox';
 export * from 'igniteui-angular/chips';
 export * from 'igniteui-angular/combo';