1 files changed, 0 insertions, 20 deletions
diff --git a/borrowed_misc.go b/borrowed_misc.go
index b84158b..59c49aa 100644
--- a/borrowed_misc.go
+++ b/borrowed_misc.go
@@ -8,8 +8,6 @@ package lowmemjson
 
 import (
 	"reflect"
-	"strings"
-	"unicode"
 )
 
 // isEmptyValue is borrowed from encode.go.
@@ -30,21 +28,3 @@ func isEmptyValue(v reflect.Value) bool {
 	}
 	return false
 }
-
-// isValidTag is borrowed from encode.go.
-func isValidTag(s string) bool {
-	if s == "" {
-		return false
-	}
-	for _, c := range s {
-		switch {
-		case strings.ContainsRune("!#$%&()*+-./:;<=>?@[]^_{|}~ ", c):
-			// Backslash and quote chars are reserved, but
-			// otherwise any punctuation chars are allowed
-			// in a tag name.
-		case !unicode.IsLetter(c) && !unicode.IsDigit(c):
-			return false
-		}
-	}
-	return true
-}