Revert "udev: disable uSD card mounting for the CCMP1"

Reverted due to u-boot mtd environment partition change (DEL-8652)

This reverts commit a3af0c8597.

https://onedigi.atlassian.net/browse/DEL-8502

meta-digi-arm/recipes-core/udev/udev-extraconf/00-disable-sd.rules

@@ -1,2 +0,0 @@
-# Disable all SD devices
-SUBSYSTEMS=="mmc", ATTRS{type}=="SD", RUN:="/bin/true"

meta-digi-arm/recipes-core/udev/udev-extraconf_1.1.bbappend

@@ -9,7 +9,6 @@ SRC_URI += " \
 "
 SRC_URI:append:ccmp1 = " \
     file://99-ext-rtc-wakeup.rules \
-    file://00-disable-sd.rules \
 "
 
 do_install:append() {
@@ -60,9 +59,6 @@ do_install:append() {
 
 do_install:append:ccmp1() {
 	install -m 0644 ${WORKDIR}/99-ext-rtc-wakeup.rules ${D}${sysconfdir}/udev/rules.d/
-	# Disables all SD device but keeps on mounting other external memory devices like USB.
-	# This is currently needed for the CCMP1 platform as a workaround to fix a boot issue.
-	install -m 0644 ${WORKDIR}/00-disable-sd.rules ${D}${sysconfdir}/udev/rules.d/
 }
 
 FILES:${PN}:append = " \