1 files changed, 0 insertions, 6 deletions
diff --git a/ext/Setup b/ext/Setup
index 0929d647ae..9c3e2f48fe 100644
--- a/ext/Setup
+++ b/ext/Setup
@@ -5,7 +5,6 @@
 #continuation
 #coverage
 #date
-#dbm
 #digest/bubblebabble
 #digest
 #digest/md5
@@ -14,17 +13,13 @@
 #digest/sha2
 #etc
 #fcntl
-#fiber
 #fiddle
-#gdbm
 #io/console
 #io/nonblock
 #io/wait
 #json
 #json/generator
 #json/parser
-#mathn/complex
-#mathn/rational
 #nkf
 #objspace
 #openssl
@@ -35,7 +30,6 @@
 #rbconfig/sizeof
 #readline
 #ripper
-#sdbm
 #socket
 #stringio
 #strscan