RFR: 8261551: Remove special CDS handling in Metaspace::allocate

[Yumin Qi]

On Thu, 25 Mar 2021 01:50:49 GMT, Ioi Lam <iklam at openjdk.org> wrote:

> Please review this simple patch to remove the special handling of OOM conditions inside `Metaspace::allocate()` for CDS archive dumping. Now the OOM exception will be thrown normally and will be handled by `MetaspaceShared::preload_and_dump()` and `ClassListParser::parse()`.

LGTM.

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Marked as reviewed by minqi (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/3185