src: Remove unused 'include <delay.h>'

Change-Id: I6afea5c102299e570378a1656d3dcd329a373399
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44093
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/qualcomm/sc7180/gpio.c

@@ -1,7 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
 #include <assert.h>
-#include <delay.h>
 #include <device/mmio.h>
 #include <types.h>
 

src/soc/qualcomm/sc7180/qupv3_spi.c

@@ -1,7 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
 #include <assert.h>
-#include <delay.h>
 #include <lib.h>
 #include <soc/clock.h>
 #include <soc/gpio.h>

src/soc/qualcomm/sc7180/usb.c

@@ -1,7 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
 #include <console/console.h>
-#include <delay.h>
 #include <device/mmio.h>
 #include <soc/usb.h>
 #include <soc/clock.h>