pre-upload: drop u-boot tab check

BUG=chromium:466264
TEST=None

Change-Id: I98b98c670b4ae9dd631f8b3f4c72bb55706de005
Reviewed-on: https://chromium-review.googlesource.com/744701
Commit-Ready: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/pre-upload.py b/pre-upload.py
index 43789d9..e733982 100755
--- a/pre-upload.py
+++ b/pre-upload.py
@@ -486,8 +486,9 @@
 
 def _check_no_tabs(_project, commit, options=()):
   """Checks there are no unexpanded tabs."""
+  # Don't add entire repos here.  Update the PRESUBMIT.cfg in each repo instead.
+  # We only whitelist known specific filetypes here that show up in all repos.
   TAB_OK_PATHS = [
-      r"/src/third_party/u-boot/",
       r".*\.ebuild$",
       r".*\.eclass$",
       r".*/[M|m]akefile$",