:art: Remove MidiIn.recv()

diff --git a/plug b/plug
index 4591ae76c605507f2097b2ee9e53748e41b91ac1..a4a346eb4a993b208af212b3cb5873e74f4bddd2 160000 (submodule)
--- a/plug
+++ b/plug
@@ -1 +1 @@
-Subproject commit 4591ae76c605507f2097b2ee9e53748e41b91ac1
+Subproject commit a4a346eb4a993b208af212b3cb5873e74f4bddd2