Fix compilation after dep updates

lib/padreader/padreader.go

@@ -1,38 +0,0 @@
-package padreader
-
-import (
-	"io"
-	"math/bits"
-
-	sectorbuilder "github.com/filecoin-project/filecoin-ffi"
-)
-
-func PaddedSize(size uint64) uint64 {
-	logv := 64 - bits.LeadingZeros64(size)
-
-	sectSize := uint64(1 << logv)
-	bound := sectorbuilder.GetMaxUserBytesPerStagedSector(sectSize)
-	if size <= bound {
-		return bound
-	}
-
-	return sectorbuilder.GetMaxUserBytesPerStagedSector(1 << (logv + 1))
-}
-
-type nullReader struct{}
-
-func (nr nullReader) Read(b []byte) (int, error) {
-	for i := range b {
-		b[i] = 0
-	}
-	return len(b), nil
-}
-
-func New(r io.Reader, size uint64) (io.Reader, uint64) {
-	padSize := PaddedSize(size)
-
-	return io.MultiReader(
-		io.LimitReader(r, int64(size)),
-		io.LimitReader(nullReader{}, int64(padSize-size)),
-	), padSize
-}

lib/padreader/padreader_test.go

@@ -1,19 +0,0 @@
-package padreader
-
-import (
-	"testing"
-
-	"gotest.tools/assert"
-)
-
-func TestComputePaddedSize(t *testing.T) {
-	assert.Equal(t, uint64(1040384), PaddedSize(1000000))
-
-	assert.Equal(t, uint64(1016), PaddedSize(548))
-	assert.Equal(t, uint64(1016), PaddedSize(1015))
-	assert.Equal(t, uint64(1016), PaddedSize(1016))
-	assert.Equal(t, uint64(2032), PaddedSize(1017))
-
-	assert.Equal(t, uint64(2032), PaddedSize(1024))
-	assert.Equal(t, uint64(4064), PaddedSize(2048))
-}