sysutils/logstash*: Remove non-${ARCH} libs from the package

stage-qa error on aarch64:

>> Status sysutils/logstash94 | logstash94-9.4.7: stage-qa

> Running Q/A tests (stage-qa)

ldd: /usr/bin/ldd32: Exec format error
ld-elf.so.1: /wrkdirs/usr/ports/sysutils/logstash94/work/stage/usr/local/logstash/vendor/jruby/lib/ruby/stdlib/libfixposix/binary/x86_64-freebsd/libfixposix.so: unsupported machine
/wrkdirs/usr/ports/sysutils/logstash94/work/stage/usr/local/logstash/vendor/jruby/lib/ruby/stdlib/libfixposix/binary/x86_64-freebsd/libfixposix.so: exit status 1

PR: 297679
Approved by: blanket (fix packaging)
Tested by: fluffy, Boris Korzun <drtr0jan@yandex.ru>
Sponsored by: UNIS Labs