[emacs] remove some unused packages

[~bandali/configs] / lib / mmm-mode

diff --git a/lib/mmm-mode b/lib/mmm-mode
deleted file mode 160000 (submodule)
index ff0b214..0000000
--- a/lib/mmm-mode
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit ff0b214f27d5dddeb856acb4216e77a864dcc0b2