diff --git a/esphome/components/mdns/mdns_arduino.h b/esphome/components/mdns/mdns_arduino.h
deleted file mode 100644
index e1292d201f..0000000000
--- a/esphome/components/mdns/mdns_arduino.h
+++ /dev/null
@@ -1,40 +0,0 @@
-#pragma once
-
-// Common Arduino mDNS registration for RP2040 and LibreTiny
-// NOTE: The platform's mDNS header (e.g., <mDNS.h> or <ESP8266mDNS.h>) must be
-// included BEFORE this header to make the MDNS global available.
-
-#include "esphome/core/application.h"
-#include "mdns_component.h"
-
-namespace esphome::mdns {
-
-/// Register mDNS services using Arduino-style mDNS library (RP2040/LibreTiny)
-/// @param services The services to register
-inline void register_arduino_mdns(MDNSComponent *, StaticVector<MDNSService, MDNS_SERVICE_COUNT> &services) {
-  MDNS.begin(App.get_name().c_str());
-
-  for (const auto &service : services) {
-    // Strip the leading underscore from the proto and service_type. While it is
-    // part of the wire protocol to have an underscore, and for example ESP-IDF
-    // expects the underscore to be there, the RP2040/LibreTiny mDNS
-    // implementations always add the underscore themselves.
-    auto *proto = MDNS_STR_ARG(service.proto);
-    while (*proto == '_') {
-      proto++;
-    }
-
-    auto *service_type = MDNS_STR_ARG(service.service_type);
-    while (*service_type == '_') {
-      service_type++;
-    }
-
-    uint16_t port = const_cast<TemplatableValue<uint16_t> &>(service.port).value();
-    MDNS.addService(service_type, proto, port);
-    for (const auto &record : service.txt_records) {
-      MDNS.addServiceTxt(service_type, proto, MDNS_STR_ARG(record.key), MDNS_STR_ARG(record.value));
-    }
-  }
-}
-
-}  // namespace esphome::mdns