vgmtools rm

diff --git a/src/util/vgmtools b/src/util/vgmtools
deleted file mode 160000 (submodule)
index e145e64..0000000
--- a/src/util/vgmtools
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit e145e64fc31558f31a9d249f0d0f4ba585e6d338