lang/zig010: drop unused dependency on archivers/lzma

Warning: you might not need LIB_DEPENDS on liblzma.so
Warning: you might not need LIB_DEPENDS on libzstd.so
actual-package-depends: dependency on /usr/lib/liblzma.so not registered (normal if it belongs to base)

Differential Revision: https://reviews.freebsd.org/D45024