RFR: JDK-8303798: REDO - Remove fdlibm C sources

[Alan Bateman]

On Sat, 1 Apr 2023 18:08:44 GMT, Joe Darcy <darcy at openjdk.org> wrote:

> This PR is a redo of JDK-8302801: Remove fdlibm C sources. The problem with JDK-8302801 was that it neglected (mea culpa) to include a Java implementation of IEEEremainder before the FDLIBM C implementation was deleted. Such an implementation has been successfully provided under JDK-8304028: Port fdlibm IEEEremainder to Java. After JDK-8304028, there are no native methods left in StrictMath.
> 
> This PR is the same as JDK-8302801 other than StrictMath.c already being removed under JDK-8304028.

I assume at least tier1-4 has been run, in which case this looks good (same as previous PR).

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Marked as reviewed by alanb (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/13279#pullrequestreview-1368033821