Remove presubmit checks for common-mk and libchroemos

common-mk and libchromeos have been removed from the manifest, we no longer need
the presubmit checks.

BUG=None
TEST=None

Change-Id: I42f5794d7be753d8217ffc6e94752a7a0c73feaf
Reviewed-on: https://chromium-review.googlesource.com/206898
Reviewed-by: Gaurav Shah <gauravsh@chromium.org>
Commit-Queue: Bertrand Simonnet <bsimonnet@chromium.org>
Tested-by: Bertrand Simonnet <bsimonnet@chromium.org>
diff --git a/pre-upload.py b/pre-upload.py
index 028d256..a90fc09 100755
--- a/pre-upload.py
+++ b/pre-upload.py
@@ -895,13 +895,7 @@
     "chromiumos/overlays/board-overlays": [_check_manifests],
     "chromiumos/overlays/chromiumos-overlay": [_check_manifests],
     "chromiumos/overlays/portage-stable": [_check_manifests],
-    # TODO(bsimonnet): remove this check once src/platform/common-mk has been
-    # removed from the manifest (crbug.com/379236).
-    "chromiumos/platform/common-mk": [_moved_to_platform2],
-    # TODO(bsimonnet): remove this check once src/platform/libchromeos has been
-    # removed from the manifest (crbug.com/379939)
     "chromiumos/platform/depthcharge": [_run_checkpatch_depthcharge],
-    "chromiumos/platform/libchromeos": [_moved_to_platform2],
     "chromiumos/platform/ec": [_run_checkpatch_ec,
                                _check_change_has_branch_field],
     "chromiumos/platform/mosys": [_check_change_has_branch_field],