RFR 8234362: k_standard.c is not needed and should be removed

[Florian Weimer]

* Florian Weimer:

> * Florian Weimer:
>
>> __kernel_standard in src/java.base/share/native/libfdlibm/k_standard.c
>> is built for _IEEE_LIBM targets as well, but it appears superfluous
>> there.
>>
>> In noticed this because GCC 10 flags an uninitialized variable in this
>> code:
>>
>> …/src/java.base/share/native/libfdlibm/k_standard.c: In function '__j__kernel_standard':
>> …/src/java.base/share/native/libfdlibm/k_standard.c:743:19: error: 'exc.retval' may be used uninitialized in this function [-Werror=maybe-uninitialized]
>>   743 |         return exc.retval;
>>       |                ~~~^~~~~~~
>>
>> Rather than debating whether this warning is reasonableor not, I would
>> suggest to #ifdef out this code for _IEEE_LIBM targets (are there any
>> else left?).
>
> I think the file should just be removed.
>
> Bug: <https://bugs.openjdk.java.net/browse/JDK-8234362>
> Webrev: <http://cr.openjdk.java.net/~fweimer/8234362/webrev.01/>
>
> As usual, I'll need a sponsor for this.

Is there anything I can do to make this patch more palatable?

Thanks,
Florian