1 files changed, 0 insertions, 6 deletions
diff --git a/libs/pbd/debug.cc b/libs/pbd/debug.cc
index acfca82b05..3055c396c6 100644
--- a/libs/pbd/debug.cc
+++ b/libs/pbd/debug.cc
@@ -64,12 +64,6 @@ DebugBits PBD::DEBUG::UndoHistory = PBD::new_debug_bit ("undohistory");
    from dynamically loaded code, for use in command line parsing, is way above the pay grade
    of this debug tracing scheme.
 */
-DebugBits PBD::DEBUG::BackendMIDI = PBD::new_debug_bit ("BackendMIDI");
-DebugBits PBD::DEBUG::BackendAudio = PBD::new_debug_bit ("BackendAudio");
-DebugBits PBD::DEBUG::BackendTiming = PBD::new_debug_bit ("BackendTiming");
-DebugBits PBD::DEBUG::BackendThreads = PBD::new_debug_bit ("BackendThreads");
-
-
 DebugBits PBD::DEBUG::WavesMIDI = PBD::new_debug_bit ("WavesMIDI");
 DebugBits PBD::DEBUG::WavesAudio = PBD::new_debug_bit ("WavesAudio");