Revert "remove unused imports"

This reverts commit 9e12c563bc.

tests/test_result_document.py

@@ -6,7 +6,10 @@
 #  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.
 
+from typing import Dict, Tuple
+import textwrap
 import fixtures
+from fixtures import *
 
 import capa
 import capa.engine as ceng