relicense: remove LGPL-2.1-only farmhash package

- we did not get consent for this package

var/spack/repos/builtin/packages/farmhash/CMakeLists.txt

-cmake_minimum_required(VERSION 2.8.3)
-
-project(farmhash)
-
-set(FARMHASH_SRCS
-    "src/farmhash.h"
-    "src/farmhash.cc"
-)
-
-set(FARMHASH_INCLUDES
-    "src/farmhash.h"
-)
-
-include_directories("${CMAKE_CURRENT_SOURCE_DIR}")
-
-add_library(farmhash ${FARMHASH_SRCS})
-add_definitions(-DFARMHASH_NO_BUILTIN_EXPECT)
-
-install(TARGETS farmhash
-  LIBRARY DESTINATION lib COMPONENT RuntimeLibraries
-  ARCHIVE DESTINATION lib COMPONENT Development)
-
-foreach(FARMHASH_INCLUDE ${FARMHASH_INCLUDES})
-  install(FILES ${FARMHASH_INCLUDE} DESTINATION include COMPONENT Development)
-endforeach()

var/spack/repos/builtin/packages/farmhash/package.py

-##############################################################################
-# Copyright (c) 2013-2018, Lawrence Livermore National Security, LLC.
-# Produced at the Lawrence Livermore National Laboratory.
-#
-# This file is part of Spack.
-# Created by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
-# LLNL-CODE-647188
-#
-# For details, see https://github.com/spack/spack
-# Please also see the NOTICE and LICENSE files for our notice and the LGPL.
-#
-# This program 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) version 2.1, February 1999.
-#
-# This program 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 terms and
-# conditions of 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 program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-##############################################################################
-from spack import *
-import os.path
-
-
-class Farmhash(CMakePackage):
-    """FarmHash provides hash functions for strings and other data."""
-
-    homepage = "https://github.com/google/farmhash"
-    git      = "https://github.com/google/farmhash.git"
-
-    version('92e897', commit='92e897b282426729f4724d91a637596c7e2fe28f')
-
-    def patch(self):
-        copy(join_path(os.path.dirname(__file__), "CMakeLists.txt"),
-             "CMakeLists.txt")