warc/header.go | 8 --------

diff --git a/warc/header.go b/warc/header.go
index 388bf0926117e08c7cecb7a96fb371e2986fe8b4..61c18bd9b543e87728470c85b3c255b95475cd05 100644
--- a/warc/header.go
+++ b/warc/header.go
@@ -22,14 +22,6 @@ import "strings"
 
 type Header map[string]string
 
-func splitKeyValue(line string) (string, string) {
-	parts := strings.SplitN(line, ":", 2)
-	if len(parts) != 2 {
-		return "", ""
-	}
-	return parts[0], strings.TrimSpace(parts[1])
-}
-
 func NewHeader() Header {
 	return make(map[string]string)
 }