main: Drop log builtin

We may revive this later, but commits in their current form aren't
very useful for humans to read, so it doesn't make sense to have a
tool to show a history of useless stuff.

More interesting things are diffs between commits, object statistics,
etc.

tests/test-log.sh

@@ -1,30 +0,0 @@
-#!/bin/bash
-#
-# Copyright (C) 2011 Colin Walters <walters@verbum.org>
-#
-# This library is free software; you can redistribute it and/or
-# modify it under the terms of the GNU Lesser General Public
-# License as published by the Free Software Foundation; either
-# version 2 of the License, or (at your option) any later version.
-#
-# This library is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-# Lesser General Public License for more details.
-#
-# You should have received a copy of the GNU Lesser General Public
-# License along with this library; if not, write to the
-# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-# Boston, MA 02111-1307, USA.
-
-set -e
-
-. $(dirname $0)/libtest.sh
-
-echo "1..1"
-
-setup_test_repository "bare"
-$OSTREE log test2 > $test_tmpdir/log.txt
-assert_file_has_content $test_tmpdir/log.txt "Test Commit 1"
-assert_file_has_content $test_tmpdir/log.txt "Test Commit 2"
-echo "ok log"