From 74055dbf07132f5de0eb473ba9f33b8508debfdc Mon Sep 17 00:00:00 2001
From: Hoang-Anh Ngo <50743576+hoanganhngo610@users.noreply.github.com>
Date: Wed, 13 Sep 2023 17:00:49 +0700
Subject: [PATCH] Delete euclidean_distance function (due to being
 unnecessary).

---
 river/cluster/hcluster.py | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/river/cluster/hcluster.py b/river/cluster/hcluster.py
index f5f6f7775f..a07759dafb 100644
--- a/river/cluster/hcluster.py
+++ b/river/cluster/hcluster.py
@@ -19,11 +19,6 @@ def __init__(self, key: int, data: np.ndarray = None):
         self.parent = None
 
 
-def euclidean_distance(w_i, w_j):
-    # Euclidean distance between two nodes
-    return np.linalg.norm(w_i.data - w_j.data)
-
-
 class HierarchicalClustering(base.Clusterer):
     """Hierarchical Clustering.