diff --git a/Trigger/TrigT1/L1CommonCore/CMakeLists.txt b/Trigger/TrigT1/L1CommonCore/CMakeLists.txt
deleted file mode 100644
index 56523157f17fde15e00cdb861439088f4d06e2f7..0000000000000000000000000000000000000000
--- a/Trigger/TrigT1/L1CommonCore/CMakeLists.txt
+++ /dev/null
@@ -1,13 +0,0 @@
-################################################################################
-# Package: L1CommonCore
-################################################################################
-
-# Declare the package name:
-atlas_subdir( L1CommonCore )
-
-# External dependencies:
-find_package( tdaq-common COMPONENTS CTPfragment )
-
-# Install files from the package:
-atlas_install_headers( L1CommonCore )
-
diff --git a/Trigger/TrigT1/L1CommonCore/L1CommonCore/CTPdataformatVersion.h b/Trigger/TrigT1/L1CommonCore/L1CommonCore/CTPdataformatVersion.h
deleted file mode 100644
index 26f756eb0577df9964950abc10a40055c4e6cb4a..0000000000000000000000000000000000000000
--- a/Trigger/TrigT1/L1CommonCore/L1CommonCore/CTPdataformatVersion.h
+++ /dev/null
@@ -1,6 +0,0 @@
-/*
-  Copyright (C) 2002-2018 CERN for the benefit of the ATLAS collaboration
-*/
-
-#pragma message( "The package L1CommonCore is obsolete and will be removed" )
-#include "CTPfragment/CTPdataformatVersion.h"