s390: desupport 32-bit Linux kernels on s390/s390x
Remove the obsolete and custom lwp assembler for the s390 and s390x
architectures. That assembler is no longer needed since 32-bit
mainframe Linux distributions are no longer supported and are very
unlikely to be in use.
The generic process.default.s is sufficient for modern 64-bit Linux
distributions on s390/s390x.
[mmeffie@sinenomine.net: commit message wording]
Change-Id: I654b10dfc257e7de90c9a50048982427276f4d61
Reviewed-on: https://gerrit.openafs.org/12475
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>