arm-bsp/n1sdp: revert "fix boot due to TF-A 2.7 update"

This reverts commit ea3479c27c.

Signed-off-by: Adam Johnston <adam.johnston@arm.com>
Signed-off-by: Jon Mason <jon.mason@arm.com>

meta-arm-bsp/conf/machine/n1sdp.conf

@@ -25,8 +25,6 @@ PREFERRED_VERSION_linux-yocto ?= "5.15%"
 MACHINE_ESSENTIAL_EXTRA_RDEPENDS += "linux-firmware-rtl8168"
 
 EXTRA_IMAGEDEPENDS += "trusted-firmware-a"
-PREFERRED_VERSION_trusted-firmware-a = "2.6"
-
 EXTRA_IMAGEDEPENDS += "virtual/control-processor-firmware"
 
 #UEFI EDK2 firmware

meta-arm-bsp/recipes-bsp/trusted-firmware-a/trusted-firmware-a_2.6.bbappend

@@ -1,8 +0,0 @@
-FILESEXTRAPATHS:prepend := "${THISDIR}/files/:"
-
-# Machine specific TFAs
-
-MACHINE_TFA_REQUIRE ?= ""
-MACHINE_TFA_REQUIRE:n1sdp = "trusted-firmware-a-n1sdp.inc"
-
-require ${MACHINE_TFA_REQUIRE}

meta-arm/recipes-bsp/trusted-firmware-a/trusted-firmware-a_2.6.bb

@@ -1,12 +0,0 @@
-require trusted-firmware-a.inc
-
-# TF-A v2.6
-SRCREV_tfa = "a1f02f4f3daae7e21ee58b4c93ec3e46b8f28d15"
-
-LIC_FILES_CHKSUM += "file://docs/license.rst;md5=b2c740efedc159745b9b31f88ff03dde"
-
-# mbed TLS v2.26.0
-SRC_URI_MBEDTLS = "git://github.com/ARMmbed/mbedtls.git;name=mbedtls;protocol=https;destsuffix=git/mbedtls;branch=master"
-SRCREV_mbedtls = "e483a77c85e1f9c1dd2eb1c5a8f552d2617fe400"
-
-LIC_FILES_CHKSUM_MBEDTLS = "file://mbedtls/LICENSE;md5=3b83ef96387f14655fc854ddc3c6bd57"