-remusr
template: ster?clnt=<name|pass>&com=remusr[&<usr_1>=<str_1>&<usr_2>=...]
          Order of query params is not important. The user
          query parameters are optional.
descript: removes all records with stereotypes matching the pairs user-stereotype
example : ster?clnt=name|pass&com=remusr&john=experts&george=visitor&george=english
returns : 200 OK, 401 (fail, request error), 501 (fail, server error)
200 OK  : example result body:
	  <result>
	    <row>
	      <num_of_rows>1</num_of_rows>
	    </row>
	  </result>