ath79: remove redundant includes in DTS files

Many DTS files contain the same includes again that are already
present in the DTSI files they are derived from.

Remove those redundant includes in the DTS files.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

target/linux/ath79/dts/ar9342_ubnt_bullet-m-xw.dts

 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
 /dts-v1/;
 
-#include <dt-bindings/gpio/gpio.h>
-#include <dt-bindings/input/input.h>
-
 #include "ar9342_ubnt_xw.dtsi"
 
 / {

target/linux/ath79/dts/ar9342_ubnt_lap-120.dts

 // SPDX-License-Identifier: GPL-2.0
 /dts-v1/;
 
-#include <dt-bindings/input/input.h>
-
 #include "ar9342_ubnt_wa.dtsi"
 
 / {

target/linux/ath79/dts/ar9342_ubnt_litebeam-ac-gen2.dts

 // SPDX-License-Identifier: GPL-2.0
 /dts-v1/;
 
-#include <dt-bindings/gpio/gpio.h>
-#include <dt-bindings/input/input.h>
-
 #include "ar9342_ubnt_wa.dtsi"
 
 / {

target/linux/ath79/dts/ar9342_ubnt_nanobeam-ac.dts

 // SPDX-License-Identifier: GPL-2.0
 /dts-v1/;
 
-#include <dt-bindings/gpio/gpio.h>
-#include <dt-bindings/input/input.h>
-
 #include "ar9342_ubnt_wa.dtsi"
 
 / {

target/linux/ath79/dts/ar9342_ubnt_nanostation-ac-loco.dts

 // SPDX-License-Identifier: GPL-2.0
 /dts-v1/;
 
-#include <dt-bindings/gpio/gpio.h>
-#include <dt-bindings/input/input.h>
-
 #include "ar9342_ubnt_wa.dtsi"
 
 / {

target/linux/ath79/dts/ar9342_ubnt_nanostation-ac.dts

 // SPDX-License-Identifier: GPL-2.0
 /dts-v1/;
 
-#include <dt-bindings/gpio/gpio.h>
-#include <dt-bindings/input/input.h>
-
 #include "ar9342_ubnt_wa.dtsi"
 
 / {

target/linux/ath79/dts/ar9342_ubnt_nanostation-loco-m-xw.dts

 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
 /dts-v1/;
 
-#include <dt-bindings/gpio/gpio.h>
-#include <dt-bindings/input/input.h>
-
 #include "ar9342_ubnt_xw.dtsi"
 
 / {

target/linux/ath79/dts/ar9342_ubnt_nanostation-m-xw.dts

 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
 /dts-v1/;
 
-#include <dt-bindings/gpio/gpio.h>
-#include <dt-bindings/input/input.h>
-
 #include "ar9342_ubnt_xw.dtsi"
 
 / {

target/linux/ath79/dts/qca9557_iodata_wn-ac1167dgr.dts

 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
 /dts-v1/;
 
-#include <dt-bindings/gpio/gpio.h>
-#include <dt-bindings/input/input.h>
-
 #include "qca9557_iodata_wn-ac-dgr.dtsi"
 
 / {

target/linux/ath79/dts/qca9557_iodata_wn-ac1600dgr.dts

 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
 /dts-v1/;
 
-#include <dt-bindings/gpio/gpio.h>
-#include <dt-bindings/input/input.h>
-
 #include "qca9557_iodata_wn-ac-dgr.dtsi"
 
 / {

target/linux/ath79/dts/qca9557_iodata_wn-ac1600dgr2.dts

 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
 /dts-v1/;
 
-#include <dt-bindings/gpio/gpio.h>
-#include <dt-bindings/input/input.h>
-
 #include "qca9557_iodata_wn-ac-dgr.dtsi"
 
 / {

target/linux/ath79/dts/qca9558_comfast_cf-wr650ac-v1.dts

 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
 /dts-v1/;
 
-#include <dt-bindings/gpio/gpio.h>
-#include <dt-bindings/input/input.h>
-
 #include "qca9558_comfast_cf-wr650ac.dtsi"
 
 / {

target/linux/ath79/dts/qca9558_comfast_cf-wr650ac-v2.dts

 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
 /dts-v1/;
 
-#include <dt-bindings/gpio/gpio.h>
-#include <dt-bindings/input/input.h>
-
 #include "qca9558_comfast_cf-wr650ac.dtsi"
 
 / {

target/linux/ath79/dts/qca9558_tplink_tl-wr1043nd-v2.dts

 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
 /dts-v1/;
 
-#include <dt-bindings/gpio/gpio.h>
-#include <dt-bindings/input/input.h>
-
 #include "qca9558_tplink_tl-wr1043nd.dtsi"
 
 / {

target/linux/ath79/dts/qca9558_tplink_tl-wr1043nd-v3.dts

 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
 /dts-v1/;
 
-#include <dt-bindings/gpio/gpio.h>
-#include <dt-bindings/input/input.h>
-
 #include "qca9558_tplink_tl-wr1043nd.dtsi"
 
 / {

target/linux/ath79/dts/qca9563_elecom_wrc-1750ghbk2-i.dts

 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
 /dts-v1/;
 
-#include <dt-bindings/gpio/gpio.h>
-#include <dt-bindings/input/input.h>
-
 #include "qca9563_elecom_wrc-ghbk2-i.dtsi"
 
 / {

target/linux/ath79/dts/qca9563_elecom_wrc-300ghbk2-i.dts

 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
 /dts-v1/;
 
-#include <dt-bindings/gpio/gpio.h>
-#include <dt-bindings/input/input.h>
-
 #include "qca9563_elecom_wrc-ghbk2-i.dtsi"
 
 / {