samples: peripheral_power_profiling: Remove unused buttons from DTS

Removed unused buttons from DTS, no longer wake up the application.
This ensures that these buttons are not initialized by the
dk_buttons_and_leds library.

Ref: NCSDK-30039

Signed-off-by: Marcin Jelinski <[email protected]>
(cherry picked from commit b99305c)

Author: maje-emb

samples/bluetooth/peripheral_power_profiling/app.overlay

@@ -0,0 +1,15 @@
+/*
+ * Copyright (c) 2024 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+ */
+
+/ {
+	aliases {
+		/delete-property/ sw2;
+		/delete-property/ sw3;
+	};
+};
+
+/delete-node/ &button2;
+/delete-node/ &button3;