put all of arranger/sequencer/transport in 1 file

crates/tek_sequencer/src/lib.rs

@@ -7,10 +7,5 @@ pub(crate) use tek_core::jack::*;
 pub(crate) use std::sync::{Arc, RwLock};
 
 submod! {
-    arranger
-    midi
-    phrase
-    scene
     sequencer
-    transport
 }