I noticed an unused import in dap/evaluate.py; and also I found out
that my recent changes to use frame filters from DAP left some unused
imports in dap/bt.py.
import gdb
import os
-import itertools
from gdb.frames import frame_iterator
-from gdb.FrameIterator import FrameIterator
-from gdb.FrameDecorator import FrameDecorator
from .frames import frame_id
from .server import request, capability
from .startup import send_gdb_with_response, in_gdb_thread
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import gdb
-import gdb.printing
# This is deprecated in 3.9, but required in older versions.
from typing import Optional