CI: remove xorg test removal from edk2

The edk file removed xorg from being tested, which is currently working
on qemuarm and qemuarm64.  Also, the section name collies with one in
fvp.yml, which has other things that are removed.  Remove this removal
to get things working as expected.

Signed-off-by: Jon Mason <jon.mason@arm.com>

ci/edk2.yml

@@ -15,5 +15,3 @@ local_conf_header:
 
     QB_DEFAULT_BIOS = "QEMU_EFI.fd"
     WKS_FILE ?= "efi-disk.wks.in"
-  failing_tests: |
-    TEST_SUITES:remove = "xorg"