diff --git a/doc/environments/groupthm/groupthm.tdo b/doc/environments/groupthm/groupthm.tdo
deleted file mode 100644
index 26e58df..0000000
--- a/doc/environments/groupthm/groupthm.tdo
+++ /dev/null
@@ -1,4 +0,0 @@
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-\contentsline {todo}{\color@fb@x {}{black}{}{orange}{\leavevmode {\color {orange}o}}\ code}{4}{section*.4}%
-\contentsline {todo}{\color@fb@x {}{black}{}{red!40}{\leavevmode {\color {red!40}o}}\ Add reference.}{7}{section*.5}%
-\contentsline {todo}{\color@fb@x {}{black}{}{red!40}{\leavevmode {\color {red!40}o}}\ Add reference.}{18}{section*.6}%