fixed formatting and import

[bmerkle]

after merge, there we still format changes

[Copilot]

Pull request overview

This PR cleans up formatting inconsistencies and removes an unused import that remained after a prior merge, keeping the codebase aligned with the repository’s Black/isort formatting expectations.

Changes:

• Reformat several call sites and function signatures for consistent line-wrapping.
• Remove an unused convknowledge import.
• Minor import ordering cleanup in conversation_base.py.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
tools/benchmark_semref_writes.py	Black-style reformatting of parameters, calls, and comprehensions in the benchmark script.
tests/test_add_messages_streaming.py	Minor formatting simplification of an awaited call in a test.
src/typeagent/storage/memory/semrefindex.py	Formatting-only changes to improve consistency/readability of calls and object construction.
src/typeagent/knowpro/knowledge.py	Removes an unused import (convknowledge).
src/typeagent/knowpro/conversation_base.py	Adjusts import ordering and simplifies a conditional-await expression formatting.