RFR: 8303799: [BACKOUT] JDK-8302801 Remove fdlibm C sources

[David Holmes]

On Wed, 8 Mar 2023 02:31:09 GMT, Joe Darcy <darcy at openjdk.org> wrote:

>> This reverts commit b5b5cba7feb0e7ef957fd6bef1e591fdb6fdaa9f.
>> 
>> Thanks.
>
> Sorry for the noise (and missing IEEERemainer)! Thanks @dholmes-ora .

Thanks for the reviews @jddarcy  and @bplb !

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PR: https://git.openjdk.org/jdk/pull/12916