[emacs] remove slack and most of its deps

[~bandali/configs] / lib / websocket

diff --git a/lib/websocket b/lib/websocket
deleted file mode 160000 (submodule)
index 0d96ba2..0000000
--- a/lib/websocket
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 0d96ba2ff5a25c6cd6c66f417cc9b5f38a4308ba