lkl: disable zpoline test on CI

zpoline test has been faced unstable crash on github actions on both
ubuntu 22.04 and 24.04 -based with different situations.  As a result,
the CI test with zpoline is unstable (sometimes passed but sometimes
not).

This commit disables the test for a while until the root issue is
resolved.  The issue is tracked at torvalds#577.

Link: lkl#577
Signed-off-by: Hajime Tazaki <thehajime@gmail.com>

Author: thehajime

.github/workflows/ci.yml

@@ -37,12 +37,6 @@ jobs:
             runs_on: ubuntu-22.04
             shell: bash
             build_options: "LLVM=1 CROSS_COMPILE=x86_64-linux-gnu"
-          - displayTargetName: zpoline
-          # maybe integrate with default Linux build once the function becomes stable
-            os: unix
-            runs_on: ubuntu-22.04
-            shell: bash
-            build_options: "zpoline=./zpoline"
     timeout-minutes: 100
     env:
       CCACHE_DIR: ${{ github.workspace }}/.ccache