git: openjdk/jdk-sandbox: riscv-port-branch: Revert unnecessary code changes for riscv port

[duke]

Changeset: c90519d8
Author:    Fei Yang <felix.yang at huawei.com>
Date:      2021-10-19 21:05:52 +0000
URL:       https://git.openjdk.java.net/jdk-sandbox/commit/c90519d8d2b4c7fbd945c262d37db03f81326eef

Revert unnecessary code changes for riscv port

! src/jdk.hotspot.agent/linux/native/libsaproc/ps_proc.c