Revert "Add deleteSeries skeleton to return bad request (#2530)"

This reverts commit d0bcbff.

pkg/query/api/v1.go

@@ -166,8 +166,6 @@ func (api *API) Register(r *route.Router, tracer opentracing.Tracer, logger log.
 	r.Get("/series", instr("series", api.series))
 	r.Post("/series", instr("series", api.series))
 
-	r.Post("/delete_series", instr("delete_series", api.deleteSeries))
-
 	r.Get("/labels", instr("label_names", api.labelNames))
 	r.Post("/labels", instr("label_names", api.labelNames))
 }
@@ -538,10 +536,6 @@ func (api *API) series(r *http.Request) (interface{}, []error, *ApiError) {
 	return metrics, warnings, nil
 }
 
-func (api *API) deleteSeries(r *http.Request) (interface{}, []error, *ApiError) {
-	return nil, nil, &ApiError{errorBadData, errors.New("delete_series is not implemented yet")}
-}
-
 func Respond(w http.ResponseWriter, data interface{}, warnings []error) {
 	w.Header().Set("Content-Type", "application/json")
 	if len(warnings) > 0 {

pkg/query/api/v1_test.go

@@ -786,13 +786,6 @@ func TestEndpoints(t *testing.T) {
 			errType: errorBadData,
 			method:  http.MethodPost,
 		},
-		// deleteSeries should return bad request.
-		{
-			endpoint: api.deleteSeries,
-			query:    url.Values{},
-			method:   http.MethodPost,
-			errType:  errorBadData,
-		},
 	}
 
 	for _, test := range tests {