samples: subsys: display: lvgl: Remove lvgl-pointer-input in overlays

After adding the lvgl pointer device into the board dts the custom overlays
are not needed anymore.

Signed-off-by: Fabian Blatz <[email protected]>

Author: faxe1008

samples/subsys/display/lvgl/boards/native_posix.overlay

@@ -25,12 +25,6 @@
 		};
 	};
 
-	lvgl_pointer_input {
-		status = "okay";
-		compatible = "zephyr,lvgl-pointer-input";
-		input = <&input_sdl_touch>;
-	};
-
 	lvgl_button_input {
 		compatible = "zephyr,lvgl-button-input";
 		input = <&keys>;

samples/subsys/display/lvgl/boards/stm32f746g_disco.overlay

@@ -5,7 +5,7 @@
  */
 
 / {
-	/delete-node/ input-sdl-touch;
+	/delete-node/ input_sdl_touch;
 
 	fake_input_device: fake-device {
 		compatible = "vnd,input-device";