revert the GIL-enabled conftest check

Author: ngoldbaum

tests/conftest.py

@@ -3,8 +3,6 @@
 # for complete details.
 
 import contextlib
-import sys
-import sysconfig
 
 import pytest
 
@@ -68,20 +66,3 @@ def test(self):
             yield
         except pytest.skip.Exception:
             pass
-
-
-FREE_THREADED_BUILD = bool(sysconfig.get_config_var("Py_GIL_DISABLED"))
-is_gil_enabled = getattr(sys, "_is_gil_enabled", lambda: True)
-gil_enabled_at_start = is_gil_enabled()
-
-
-def pytest_terminal_summary(terminalreporter, exitstatus, config):
-    if FREE_THREADED_BUILD and not gil_enabled_at_start and is_gil_enabled():
-        tr = terminalreporter
-        tr.ensure_newline()
-        tr.section("GIL re-enabled", sep="=", red=True, bold=True)
-        tr.line("The GIL was re-enabled at runtime during the tests.")
-        tr.line("Please ensure all new pymodules declare support for running")
-        tr.line("without the GIL. Any new tests that intentionally imports ")
-        tr.line("code that re-enables the GIL should do so in a subprocess.")
-        pytest.exit("GIL re-enabled during tests", returncode=1)