Revert "Extract searching relevat files in utils function"

This reverts commit 512fd3bd855fe001443ee3328d139da8c4b95d00.

Reason for revert: breaks some presubmits
https://crbug.com/1421441

Original change's description:
> Extract searching relevat files in utils function
>
> This change introduces lib/ directory which will be used for classes
> that are considered libraries and used by multiple executables.
>
> Change-Id: I3da126778bf5ffdb28d7a3c2b966c85de08ba717
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/4289679
> Reviewed-by: Joanna Wang <jojwang@chromium.org>
> Commit-Queue: Josip Sokcevic <sokcevic@chromium.org>

Bug: 1421441
Change-Id: I20e40f452a544a1188a258131a620e2afcd64f13
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/4328468
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Josip Sokcevic <sokcevic@chromium.org>
diff --git a/git_cl.py b/git_cl.py
index 51a5708..9dced40 100755
--- a/git_cl.py
+++ b/git_cl.py
@@ -55,7 +55,6 @@
 import swift_format
 import watchlists
 
-from lib import utils
 from third_party import six
 from six.moves import urllib
 
@@ -6194,6 +6193,7 @@
 
 
 def CMDversion(parser, args):
+  import utils
   print(utils.depot_tools_version())