deepin: CI: Disable LLVM check for s390x (only 6.6)

Linux kernel v6.6 does not support LLVM on s390x (fixed on v6.9).
Disable it only for linux-6.6.

Signed-off-by: WangYuli <wangyuli@uniontech.com>

Author: WangYuli

.github/workflows/build-kernel-s390.yml

@@ -33,9 +33,3 @@ jobs:
         with:
           name: Kernel-ABI-s390
           path: "Module.symvers"
-
-      - name: 'Clang build kernel'
-        run: |
-          # .config
-          make LLVM=-19 deepin_s390x_z13_defconfig
-          make LLVM=-19 -j$(nproc)