Remove deprecated methods from GroupService

Author: jgreaves8

src/services/GroupService.ts

@@ -6,19 +6,4 @@ export class GroupsService extends BaseService<Group> {
     constructor(client: Client) {
         super(client, "/v3/orgs/:orgId/iam/groups");
     }
-
-    async deleteBinding(groupId: string, bindingId: string) {
-        let deleteEndpoint = this.endpoint + '/' + groupId + '/bindings/' + bindingId;
-        return await this.client.makeDeleteRequest(deleteEndpoint);
-    }
-
-    async createBinding(groupId: string, body: string) {
-        let createBindingEndpoint = this.endpoint + '/' + groupId + '/bindings';
-        return await this.client.makePostRequest(createBindingEndpoint, {
-            data: {
-                type: 'bindings',
-                attributes: JSON.parse(body)
-            }
-        });
-    }
-}
+}