Remove InfluxDB path prefix test

This tests a feature that is not yet on this branch and the test was
mistakenly backported.

plugins/outputs/influxdb/client/http_test.go

@@ -299,37 +299,3 @@ func TestGzipCompression(t *testing.T) {
 
 	assert.Equal(t, []byte(influxLine), uncompressed.Bytes())
 }
-
-func TestHTTPClient_PathPrefix(t *testing.T) {
-	prefix := "/some/random/prefix"
-	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		switch r.URL.Path {
-		case prefix + "/write":
-			w.WriteHeader(http.StatusNoContent)
-			w.Header().Set("Content-Type", "application/json")
-		case prefix + "/query":
-			w.WriteHeader(http.StatusOK)
-			w.Header().Set("Content-Type", "application/json")
-			fmt.Fprintln(w, `{"results":[{}]}`)
-		default:
-			w.WriteHeader(http.StatusNotFound)
-			msg := fmt.Sprintf("Path not found: %s", r.URL.Path)
-			fmt.Fprintln(w, msg)
-		}
-	}))
-	defer ts.Close()
-
-	config := HTTPConfig{
-		URL: ts.URL + prefix,
-	}
-	wp := WriteParams{
-		Database: "test",
-	}
-	client, err := NewHTTP(config, wp)
-	defer client.Close()
-	assert.NoError(t, err)
-	err = client.Query("CREATE DATABASE test")
-	assert.NoError(t, err)
-	err = client.WriteStream(bytes.NewReader([]byte("cpu value=99\n")))
-	assert.NoError(t, err)
-}