1 files changed, 0 insertions, 47 deletions
diff --git a/format/delta/apply/header.go b/format/delta/apply/header.go
deleted file mode 100644
index dbd29550..00000000
--- a/format/delta/apply/header.go
+++ /dev/null
@@ -1,47 +0,0 @@
-package apply
-
-import (
-	"fmt"
-	"io"
-)
-
-// ReadHeaderSizes reads the first two varints in one inflated delta stream.
-//
-// Callers that continue reading the same stream should pass their own buffered
-// byte reader and keep using that same reader afterwards.
-func ReadHeaderSizes(reader io.ByteReader) (int, int, error) {
-	srcSize, err := readVarintFromByteReader(reader)
-	if err != nil {
-		return 0, 0, err
-	}
-
-	dstSize, err := readVarintFromByteReader(reader)
-	if err != nil {
-		return 0, 0, err
-	}
-
-	return srcSize, dstSize, nil
-}
-
-// readVarintFromByteReader parses one Git delta varint from reader.
-func readVarintFromByteReader(reader io.ByteReader) (int, error) {
-	value := 0
-	shift := uint(0)
-
-	for {
-		b, err := reader.ReadByte()
-		if err != nil {
-			return 0, fmt.Errorf("format/delta/apply: malformed delta varint: %w", err)
-		}
-
-		value |= int(b&0x7f) << shift
-		if b&0x80 == 0 {
-			return value, nil
-		}
-
-		shift += 7
-		if shift > 63 {
-			return 0, fmt.Errorf("format/delta/apply: delta varint overflow")
-		}
-	}
-}