Revert "patman: invoke the checkpatch.pl script with '--u-boot' and '--strict'"

This reverts commit 648d8186dd7f9c444fb07f355090d275dcdd4de4, because
it broke usage of patman on Linux, whose check script doesn't know
about '--strict' or '--u-boot'.

Reported-by: Sjoerd Simons <sjoerd@collabora.com>
Signed-off-by: Maxim Cournoyer <maxim.cournoyer@savoirfairelinux.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Sjoerd Simons <sjoerd@collabora.com>
diff --git a/tools/patman/checkpatch.py b/tools/patman/checkpatch.py
index 012c0d8..d1b902d 100644
--- a/tools/patman/checkpatch.py
+++ b/tools/patman/checkpatch.py
@@ -211,7 +211,7 @@
             stdout: Full output of checkpatch
     """
     chk = find_check_patch()
-    args = [chk, '--u-boot', '--strict']
+    args = [chk]
     if not use_tree:
         args.append('--no-tree')
     if show_types: