fix: cleanup

Author: Angular2Guy

frontend/src/angular/src/app/maps/services/company-site.service.ts

@@ -13,7 +13,6 @@
    limitations under the License.
  */
 import { Injectable } from "@angular/core";
-import { HttpClient } from "@angular/common/http";
 import { Observable } from "rxjs";
 import { map } from "rxjs/operators";
 import { CompanySite } from "../model/company-site";