package/glibc: remove --{with, without}-fp option

This option has been removed since glibc 2.27 [1].

[1] https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=8df5d34720dd71e934545bade879e04697830757



Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>