diff --git a/web/ui/react-app/src/pages/graph/GraphHistogramHelpers.ts b/web/ui/react-app/src/pages/graph/GraphHistogramHelpers.ts
deleted file mode 100644
index 4481f8f96..000000000
--- a/web/ui/react-app/src/pages/graph/GraphHistogramHelpers.ts
+++ /dev/null
@@ -1,62 +0,0 @@
-/**
- * Inspired by a similar feature in VictoriaMetrics.
- * See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3384 for more details.
- * Developed by VictoriaMetrics team.
- */
-
-import { GraphExemplar, GraphProps, GraphSeries } from './Graph';
-
-export function isHistogramData(data: GraphProps['data']) {
-  if (!data?.result?.length) return false;
-  const result = data.result;
-  if (result.length < 2) return false;
-  const histogramLabels = ['le'];
-
-  const firstLabels = Object.keys(result[0].metric).filter((n) => !histogramLabels.includes(n));
-  const isHistogram = result.every((r) => {
-    const labels = Object.keys(r.metric).filter((n) => !histogramLabels.includes(n));
-    return firstLabels.length === labels.length && labels.every((l) => r.metric[l] === result[0].metric[l]);
-  });
-
-  return isHistogram && result.every((r) => histogramLabels.some((l) => l in r.metric));
-}
-
-export function prepareHistogramData(buckets: GraphSeries[]) {
-  if (!buckets.every((a) => a.labels.le)) return buckets;
-
-  const sortedBuckets = buckets.sort((a, b) => promValueToNumber(a.labels.le) - promValueToNumber(b.labels.le));
-  const result: GraphSeries[] = [];
-
-  for (let i = 0; i < sortedBuckets.length; i++) {
-    const values = [];
-    const { data, labels, color } = sortedBuckets[i];
-
-    for (const [timestamp, value] of data) {
-      const prevVal = sortedBuckets[i - 1]?.data.find((v) => v[0] === timestamp)?.[1] || 0;
-      const newVal = Number(value) - +prevVal;
-      values.push([Number(timestamp), newVal]);
-    }
-
-    result.push({
-      data: values,
-      labels,
-      color,
-      index: i,
-    });
-  }
-  return result;
-}
-
-export function promValueToNumber(s: string) {
-  switch (s) {
-    case 'NaN':
-      return NaN;
-    case 'Inf':
-    case '+Inf':
-      return Infinity;
-    case '-Inf':
-      return -Infinity;
-    default:
-      return parseFloat(s);
-  }
-}