virtual/libudev: Remove incorrect eudev provider from 232
Remove sys-fs/eudev from the list of providers for 232 since it does
not satisfy the requirement on that version. Since it is the only
provider offering static-libs, remove that flag as well (reverse
dependencies have already been updated to account for that). While
at it, bump to EAPI 7.
People who are in dire need of static libraries or eudev in general
can still install the older version of virtual/libudev.
Closes: https://bugs.gentoo.org/697550
Signed-off-by: Michał Górny <mgorny@gentoo.org>