removed alert after login/logout

inclued Changes are as follows:-

• removed alert which pops up after login and logout

• changed the api call for logout which :-

  Previously

  axios.get(" https://api.vachanengine.org/redoc#operation/logout_v2_user_logout_get ",{headers:{ 'content-type': 'application/json', 'token': token }})

  Now

  axios.get(`${base_url}user/logout`,{headers:{ 'content-type': 'application/json', app: "Autographa", Authorization: `Bearer ${token}` }})