fix deletion of fsck recovered files

The 'find' expression was looking for directories whose name ends
in ".M", however no such directories exist on the drive image, since
they are only created in /mutable/TeslaCam when creating symlinks.
Delete the actual files instead.

run/archiveloop

@@ -355,7 +355,7 @@ function clean_cam_mount {
   log "cleaning cam mount"
   # Delete the files that fsck "recovered". These are generally files
   # that were deleted previously by the car or teslausb
-  find "${CAM_MOUNT}" \( \( -type f -name FSCK\*.REC \) -o \( -type d -name \*.M \) \) -print0 | xargs -0 rm -rf
+  find "${CAM_MOUNT}" \( \( -type f -name FSCK\*.REC \) -o \( -type f -name "*~[0-9].MP4" \) \) -print0 | xargs -0 rm -rf
 
   # Remove files, oldest first, until there is at least 20GB of free space