Modify the LICENSE-APACHE and LICENSE-MIT files.

This modifies the files so that they are exactly the same as the
Rust project's license files. This does not change the wording of
the license.

LICENSE-APACHE

@@ -199,4 +199,3 @@ distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
-