revert change that breaks test_doctest (which I forgot to run - sorry)

Lib/doctest.py

@@ -320,19 +320,8 @@ class _OutputRedirectingPdb(pdb.Pdb):
     """
     def __init__(self, out):
         self.__out = out
-        self.__debugger_used = False
         pdb.Pdb.__init__(self, stdout=out)
 
-    def set_trace(self):
-        self.__debugger_used = True
-        pdb.Pdb.set_trace(self)
-
-    def set_continue(self):
-        # Calling set_continue unconditionally would break unit test
-        # coverage reporting, as Bdb.set_continue calls sys.settrace(None).
-        if self.__debugger_used:
-            pdb.Pdb.set_continue(self)
-
     def trace_dispatch(self, *args):
         # Redirect stdout to the given stream.
         save_stdout = sys.stdout

Lib/trace.py

@@ -286,8 +286,6 @@ class CoverageResults:
             # skip some "files" we don't care about...
             if filename == "<string>":
                 continue
-            if filename.startswith("<doctest "):
-                continue
 
             if filename.endswith((".pyc", ".pyo")):
                 filename = filename[:-1]