RFR: 8296262: Remove dead code from InstanceKlass::signature_name()

[David Holmes]

On Wed, 2 Nov 2022 23:15:20 GMT, Ioi Lam <iklam at openjdk.org> wrote:

>> Trivial dead code removal.
>> 
>> Testing: simple build.
>> 
>> Thanks.
>
> Looks good and trivial.

Thanks @iklam !

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PR: https://git.openjdk.org/jdk/pull/10962