Delete third_party/harfbuzz

third_party/harfbuzz/COPYING

Index: third_party/harfbuzz/COPYING
diff --git a/third_party/harfbuzz/COPYING b/third_party/harfbuzz/COPYING
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-HarfBuzz was previously licensed under different licenses.  This was
-changed in January 2008.  If you need to relicense your old copies,
-consult the announcement of the license change on the internet.
-Other than that, each copy of HarfBuzz is licensed under the COPYING
-file included with it.  The actual license follows:
-
-
-Permission is hereby granted, without written agreement and without
-license or royalty fees, to use, copy, modify, and distribute this
-software and its documentation for any purpose, provided that the
-above copyright notice and the following two paragraphs appear in
-all copies of this software.
-
-IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
-DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
-ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
-IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
-DAMAGE.
-
-THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
-BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
-FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
-ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
-PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.