ci: drop redundant configuration

The l1 build configuration fvp-default,fvp-spm,nil is
redundant, given this is also in l1:
fvp-default,fvp-spm,fvp-default,nil.

The later adds build of tf-a-tests to the later.

Signed-off-by: J-Alves <joao.alves@arm.com>
Change-Id: I0ec5270c973c027d33395ec866e3b830c35933da
diff --git a/group/spm-l1-build-tests/fvp-default,fvp-spm:nil b/group/spm-l1-build-tests/fvp-default,fvp-spm:nil
deleted file mode 100644
index c473896..0000000
--- a/group/spm-l1-build-tests/fvp-default,fvp-spm:nil
+++ /dev/null
@@ -1,6 +0,0 @@
-#
-# Copyright (c) 2023, Arm Limited. All rights reserved.
-#
-# SPDX-License-Identifier: BSD-3-Clause
-#
-