Move UTCP into the MeshLink repository.

[meshlink] / src / utcp

diff --git a/src/utcp b/src/utcp
deleted file mode 160000 (submodule)
index 4f63457..0000000
--- a/src/utcp
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 4f6345726724732b564dd55b20ecb3e20a127bd0