README: tg collapse is already implemented (as tg export)

diff --git a/README b/README
index 275043b2c2bd05060dd011a369e9739cce1cad07..5aedbba045bef77834d0db52312e9dc046ddfc2f 100644 (file)
--- a/README
+++ b/README
@@ -321,8 +321,6 @@ tg update
 TODO: Some infrastructure for sharing topic branches between
        repositories easily
 TODO: tg depend for adding/removing dependencies smoothly
-TODO: tg collapse for creating a one-commit-per-patch tidied up
-       history (for pulling by upstream)
 
 
 IMPLEMENTATION