diff --git a/samples/net/sockets/echo_client/overlay-enc28j60.conf b/samples/net/sockets/echo_client/overlay-enc28j60.conf
deleted file mode 100644
index 2ec32435494..00000000000
--- a/samples/net/sockets/echo_client/overlay-enc28j60.conf
+++ /dev/null
@@ -1,7 +0,0 @@
-# ENC28J60 is L2 chip slave on SPI
-CONFIG_SPI=y
-CONFIG_NET_L2_ETHERNET=y
-
-# ENC28J60 Ethernet Device
-CONFIG_ETH_ENC28J60=y
-CONFIG_ETH_ENC28J60_0=y
diff --git a/samples/net/sockets/echo_client/sample.yaml b/samples/net/sockets/echo_client/sample.yaml
index 3a04b24e20c..b688edfe211 100644
--- a/samples/net/sockets/echo_client/sample.yaml
+++ b/samples/net/sockets/echo_client/sample.yaml
@@ -34,7 +34,3 @@ tests:
     slow: true
     tags: net openthread
     platform_whitelist: frdm_kw41z
-  sample.net.sockets.echo_client.enc28j60:
-    extra_args: OVERLAY_CONFIG="overlay-enc28j60.conf"
-    tags: net enc28j60
-    platform_whitelist: arduino_101
diff --git a/samples/net/sockets/echo_server/arduino_101.overlay b/samples/net/sockets/echo_server/arduino_101.overlay
deleted file mode 100644
index 7a5b81d11f8..00000000000
--- a/samples/net/sockets/echo_server/arduino_101.overlay
+++ /dev/null
@@ -1,21 +0,0 @@
-/*
- * Copyright (c) 2018-2019 Linaro Limited
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-
-&spi1 {
-	status = "okay";
-	cs-gpios = <&gpio0 0 0>;
-
-	enc28j60@0 {
-		compatible = "microchip,enc28j60";
-		spi-port-name = "SPI_1";
-		local-mac-address = [00 00 00 00 00 00];
-		spi-max-frequency = <128000>;
-		int-gpios = <&gpio0 19 1>;
-		status = "okay";
-		label = "ETH_0";
-		reg = <0>;
-	};
-};
diff --git a/samples/net/sockets/echo_server/boards/quark_se_c1000_devboard.conf b/samples/net/sockets/echo_server/boards/quark_se_c1000_devboard.conf
deleted file mode 100644
index bb548ac9ab7..00000000000
--- a/samples/net/sockets/echo_server/boards/quark_se_c1000_devboard.conf
+++ /dev/null
@@ -1 +0,0 @@
-CONFIG_NET_STATISTICS=n
diff --git a/samples/net/sockets/echo_server/sample.yaml b/samples/net/sockets/echo_server/sample.yaml
index d2369992c4f..fca019485b4 100644
--- a/samples/net/sockets/echo_server/sample.yaml
+++ b/samples/net/sockets/echo_server/sample.yaml
@@ -46,10 +46,6 @@ tests:
     slow: true
     tags: net openthread
     platform_whitelist: frdm_kw41z
-  sample.net.sockets.echo_server.enc28j60:
-    extra_args: OVERLAY_CONFIG="overlay-enc28j60.conf"
-    tags: net enc28j60
-    platform_whitelist: arduino_101
   sample.net.sockets.echo_server.e1000:
     extra_args: OVERLAY_CONFIG="overlay-e1000.conf"
     tags: net