PRESUBMIT.cfg: update cros lint usage

Drop gnlint as it's in cros lint now.  Use the new --commit option.

Bug: None
Test: CQ passes

Change-Id: I8746f8dabbd75c985208c0d0d1a199a3efed102c
diff --git a/PRESUBMIT.cfg b/PRESUBMIT.cfg
index 9993474..e037261 100644
--- a/PRESUBMIT.cfg
+++ b/PRESUBMIT.cfg
@@ -1,6 +1,5 @@
 [Hook Scripts]
-hook0=../../../../chromite/bin/cros lint ${PRESUBMIT_FILES}
-hook1=../../../platform2/common-mk/gnlint.py ${PRESUBMIT_FILES}
+cros lint = cros lint --commit ${PRESUBMIT_COMMIT} ${PRESUBMIT_FILES}
 
 [Hook Overrides]
 clang_format_check: true