Revert "riscv:uprobe: fix flush_icache to ensure that instructions are refreshed when switching to user mode"

[cp0613]

This patch will cause a compilation error, and the original implementation is already aligned with the upstream, so no modification is needed.

[github-actions]

---

开始测试 log: https://github.com/RVCK-Project/rvck/actions/runs/21580919421

参数解析结果

args	value
repository	RVCK-Project/rvck
head ref	pull/210/head
base ref	rvck-6.6
LAVA repo	RVCK-Project/lavaci
LAVA Template	lava-job-template/qemu/qemu-ltp.yaml
Testcase path	lava-testcases/common-test/ltp/ltp.yaml
need run job	kunit-test,kernel-build,check-patch,lava-trigger

---

测试完成

详细结果:

RVCK result

check	result
kunit-test	success
kernel-build	success
lava-trigger	success
check-patch	success

Kunit Test Result

[07:24:31] Testing complete. Ran 455 tests: passed: 443, skipped: 12

Kernel Build Result

Kernel build succeeded: RVCK-Project/rvck/210/

10897803fe5abdaa685e87d77531cb58 /srv/guix_result/cbd0f78c8d4cd89e6c14827968e41bebb9e05367/Image
ee0d20a071911cf94e176d5e2f761961 /root/initramfs.img

LAVA Check

args:

• testcase_repo: RVCK-Project/lavaci
• testcase_ref: main
• lava_template: lava-job-template/qemu/qemu-ltp.yaml
• testcase_path: lava-testcases/common-test/ltp/ltp.yaml
• testitem_name: RVCK-Project_rvck_pull_request_target_210__common-test_qemu
• kernel_download_url: https://repo.tarsier-infra.isrc.ac.cn/openEuler-RISC-V/RVCK/OERV-RVCI/RVCK-Project/rvck/210/Image
• initramfs_download_url: https://repo.tarsier-infra.isrc.ac.cn/openEuler-RISC-V/RVCK/OERV-RVCI/RVCK-Project/rvck/210/initramfs.img
• rootfs_download_url: https://fast-mirror.isrc.ac.cn/openeuler-sig-riscv/openEuler-RISC-V/RVCK/openEuler24.03-LTS-SP1/openeuler-rootfs.img.zst

result:

Lava check done! lava log: https://lava.oerv.ac.cn/scheduler/job/1284

lava result count: [fail]: 174, [pass]: 1435, [skip]: 290

Check Patch Result

Total Errors	0
Total Warnings	0

[sterling-teng]

revert补丁的格式也需要遵守规范，否则一些基础设施无法运行。

另外，需要引用对用的issue，请新建issue。