base_image_util: remove obsolete comments

The comments removed is obsolete and misleading. This CL remove them.

BUG=None
TEST=None

Change-Id: I3fd7eeacbcf48b0edf158ce30314b8877de7a687
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosutils/+/2148806
Tested-by: Boleyn Su <boleynsu@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
diff --git a/build_library/base_image_util.sh b/build_library/base_image_util.sh
index 5696760..1008e61 100755
--- a/build_library/base_image_util.sh
+++ b/build_library/base_image_util.sh
@@ -232,11 +232,6 @@
   # trim the image size as much as possible.
   emerge_to_image --root="${root_fs_dir}" ${BASE_PACKAGE}
 
-  #
-  # Take a somewhat arbitrary number of post-emerge tasks and run them
-  # in parallel to speed things up.
-  #
-
   # Run depmod to recalculate the kernel module dependencies.
   run_depmod "${BOARD_ROOT}" "${root_fs_dir}"