[python] Remove no-longer-necessary _query_condition import

[ryan-williams]

Issue and/or context: #1960 (comment), #2293

Update:

• The underlying segfault still exists: [python] Importing tiledb before tiledbsoma leads to segfault in clib.SOMAObject.open on MacOS #2293; occurs on macOS when tiledb is imported before tiledbsoma
• [python/ci] Factor pytest.fixtures, verify #1988 #2299 made it harder to trigger while unit-testing, because it made conftest.py import tiledbsoma very early during test initialization (here)
• It's probably safe/reasonable to remove the _query_condition import, as this PR does, since it is no longer helping us work around Typeguard issues or the segfault.

Previous description

If a from tiledbsoma import _query_condition is omitted at the start of tests/__init__.py, tests segfault during clib.SOMAObject.open here:

TileDB-SOMA/apis/python/src/tiledbsoma/_tdb_handles.py

Lines 56 to 60 in 0b99e03

	# if there is not a valid SOMAObject at the given URI, this
	# returns None
	soma_object = clib.SOMAObject.open(
	uri, open_mode, context.native_context, timestamp=(0, timestamp_ms)
	)

Currently this PR is just designed to repro the issue.

Update: GHA repro line, appears to be macOS only.

[codecov]

Codecov Report

Merging #2286 (375a690) into main (1c1f362) will increase coverage by 11.82%.
Report is 1 commits behind head on main.
The diff coverage is n/a.

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #2286       +/-   ##
===========================================
+ Coverage   78.75%   90.58%   +11.82%     
===========================================
  Files         140       37      -103     
  Lines       10756     3875     -6881     
  Branches      215        0      -215     
===========================================
- Hits         8471     3510     -4961     
+ Misses       2187      365     -1822     
+ Partials       98        0       -98     

Flag	Coverage Δ
libtiledbsoma	?
python	90.58% <ø> (ø)
r	?

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
python_api	90.58% <ø> (ø)
libtiledbsoma	∅ <ø> (∅)

[johnkerl]

💥

[ryan-williams]

Updated description re: why the _query_condition import is no longer necessary, merging this now.