Clean up logging service.

web/src/services/logging/log-service.ts

@@ -1,6 +1,5 @@
 import { LogLevel } from './log-message';
 import Logger from './logger';
-import { default as Axios, AxiosInstance } from 'axios';
 
 const ROOT_LOGGER_NAME = 'ROOT';
 
@@ -8,7 +7,6 @@ const ROOT_LOGGER_NAME = 'ROOT';
 export class LogService {
 
   private loggers: { [key: string]: Logger };
-  private http: AxiosInstance = Axios.create();
 
   public get ROOT_LOGGER() {
     return this.loggers[ROOT_LOGGER_NAME];