RFR: 8318086: [jvmci] RISC-V: Reuse target config from TargetDescription

[Fei Yang]

On Fri, 13 Oct 2023 11:42:51 GMT, Feilong Jiang <fjiang at openjdk.org> wrote:

> Hi, please review this cleanup. 
> 
> [JDK-8262901](https://bugs.openjdk.org/browse/JDK-8262901) moved `linuxOs` and `macOs` from AArch64HotSpotVMConfig.java into TargetDescription.java, we can reuse `linuxOs` for RISC-V.
> 
> Testing:
> 
> - [x] `compiler/jvmci` with linux-riscv release build

Marked as reviewed by fyang (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/16181#pullrequestreview-1676689267