remove pexpect usign yield test

testing/test_pdb.py

@@ -809,27 +809,6 @@ def test_1():
         assert "reading from stdin while output" not in rest
         TestPDB.flush(child)
 
-    def test_trace_against_yield_test(self, testdir):
-        p1 = testdir.makepyfile(
-            """
-            def is_equal(a, b):
-                assert a == b
-
-            def test_1():
-                yield is_equal, 1, 1
-            """
-        )
-        child = testdir.spawn_pytest(
-            "{} --trace {}".format(SHOW_PYTEST_WARNINGS_ARG, str(p1))
-        )
-        child.expect("is_equal")
-        child.expect("Pdb")
-        child.sendeof()
-        rest = child.read().decode("utf8")
-        assert "1 passed" in rest
-        assert "reading from stdin while output" not in rest
-        TestPDB.flush(child)
-
 
 def test_trace_after_runpytest(testdir):
     """Test that debugging's pytest_configure is re-entrant."""
@@ -855,4 +834,4 @@ def test_inner(testdir):
     child.sendline("c")
     rest = child.read().decode("utf8")
     TestPDB.flush(child)
-    assert child.exitstatus == 0, rest
+    assert child.exitstatus == 0, rest