Remove a duplicated method introduced in rebase

R=iannucci

Change-Id: Iaecc25e021f77aad27bde07dbc39e0d4edffffb4
Reviewed-on: https://chromium-review.googlesource.com/c/infra/luci/luci-py/+/2229845
Auto-Submit: Yiwei Zhang <yiwzhang@google.com>
Reviewed-by: Robbie Iannucci <iannucci@chromium.org>
Commit-Queue: Robbie Iannucci <iannucci@chromium.org>
NOKEYCHECK=True
GitOrigin-RevId: aeee9d0bf4c97b5c9fc9cc1551a30111d4f99084
diff --git a/stream.py b/stream.py
index fa1429a..6610131 100644
--- a/stream.py
+++ b/stream.py
@@ -555,9 +555,6 @@
     def fileno(self):
       return self._sock
 
-    def fileno(self):
-      return self._fd
-
     def write(self, data):
       self._sock.sendall(data)