mkosi: Drop squashfs dropin

This accidentally got pulled into a commit even though it was only
for local testing, let's drop it again so we correctly use erofs
when building local images.

diff --git a/mkosi.presets/20-final/mkosi.repart/10-usr.conf.d/squashfs.conf b/mkosi.presets/20-final/mkosi.repart/10-usr.conf.d/squashfs.conf
deleted file mode 100644 (file)
index 1e54ee1..0000000
--- a/mkosi.presets/20-final/mkosi.repart/10-usr.conf.d/squashfs.conf
+++ /dev/null
@@ -1,2 +0,0 @@
-[Partition]
-Format=squashfs