diff --git a/src/features/dlig-classes.fea b/src/features/dlig-classes.fea
deleted file mode 100644
index b01b6d950..000000000
--- a/src/features/dlig-classes.fea
+++ /dev/null
@@ -1,12 +0,0 @@
-# classes used by dlig and ss06
-
-# left side "trigger" glyph for t.1 and f.1 sub
-@LIGA_L_t = [
-  f f.1 fdotaccent feng
-
-  r rrthook uni024D rfishhook rdescend racute rcommaaccent rcaron
-  rdblgrave rinvertedbreve rdotaccent rdotbelow rdotbelowmacron rlinebelow
-
-  t t.1 tpalatalhook trthook tcurl tbar tcedilla tcaron tcommaaccent tdotaccent
-  tdotbelow tlinebelow tcircumflexbelow tdieresis
-];