delete mode 100644 lib/std/compress/flate/testdata/rfc1951.txt
 delete mode 100644 lib/std/compress/testdata/rfc8478.txt
 delete mode 100644 lib/std/compress/testdata/rfc8478.txt.zst.19
 delete mode 100644 lib/std/compress/testdata/rfc8478.txt.zst.3