diff --git a/config/functions b/config/functions
index c9691c9c95..b6cf71aeaa 100644
--- a/config/functions
+++ b/config/functions
@@ -671,17 +671,6 @@ install_addon_files() {
   create_addon_xml "$1"
 }
 
-tolower() {
-  echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
-}
-
-require_eglibc() {
-  if [ "$TARGET_LIBC" != eglibc ]; then
-    echo "$1 requires eglibc, aborting."
-    exit 1
-  fi
-}
-
 add_user() {
   # Usage: add_user "username" "password" "userid" "groupid" "description" "home" "shell"
   mkdir -p ${INSTALL}/etc