diff --git a/.codex b/.codex
deleted file mode 100644
index e69de29..0000000
diff --git a/src/QuantumInputOutput.jl b/src/QuantumInputOutput.jl
index 2542e73..c586b11 100644
--- a/src/QuantumInputOutput.jl
+++ b/src/QuantumInputOutput.jl
@@ -41,9 +41,6 @@ export SLH, # SLH.jl
     interaction_picture_A_2modes,
     interaction_picture_A_3modes,
     interaction_picture_A_4modes,
-    interaction_picture_A_uv,
-    interaction_picture_A_ucv,
-    interaction_picture_A_uuvv,
     substitute_operators
 
 include("SLH.jl")