export material only from the core (#2885)

lib/content-services/content.module.ts

@@ -83,8 +83,7 @@ import { ContentMetadataModule } from './content-metadata/content-metadata.modul
         ContentNodeSelectorModule,
         ContentMetadataModule,
         DialogModule,
-        FolderDirectiveModule,
-        MaterialModule
+        FolderDirectiveModule
     ]
 })
 export class ContentModule {

lib/insights/insights.module.ts

@@ -53,7 +53,6 @@ import { MaterialModule } from './material.module';
         FormsModule,
         ReactiveFormsModule,
         BrowserAnimationsModule,
-        MaterialModule,
         DiagramsModule,
         AnalyticsProcessModule
     ]

lib/process-services/process.module.ts

@@ -65,8 +65,7 @@ import { PeopleModule } from './people/people.module';
         TaskListModule,
         AppsListModule,
         AttachmentModule,
-        PeopleModule,
-        MaterialModule
+        PeopleModule
     ]
 })
 export class ProcessModule {