u-boot: Remove kconfig specific env integration patch

This is no longer necessary since meta-balena commit
ef248aa5163 which defaults to u-boot
Kconfig support

Signed-off-by: Alexandru Costache <alexandru@balena.io>

layers/meta-balena-raspberrypi/recipes-bsp/u-boot/u-boot_%.bbappend

@@ -3,9 +3,6 @@ UBOOT_KCONFIG_SUPPORT = "1"
 
 FILESEXTRAPATHS:prepend := "${THISDIR}/${PN}:"
 
-# Remove patch inherited from meta-resin. This needs to be rebased for v2018.07
-SRC_URI:remove = " file://resin-specific-env-integration-kconfig.patch "
-
 # Update to u-boot v2021.10 on top of which
 # we apply the NVME patches for CM4.
 SRCREV="d80bb749fab53da72c4a0e09b8c2d2aaa3103c91"
@@ -21,7 +18,6 @@ RPI_PATCHES = " \
 "
 
 SRC_URI += " \
-    file://0001-Integrate-machine-independent-resin-environment-conf.patch \
     ${RPI_PATCHES} \
 "