Assuming issue #17314 gets fixed, that leaves the following uses of imp.find_module():

Lib/idlelib/EditorWindow.py
39:    """Version of imp.find_module() that handles hierarchical module names"""
45:        (file, filename, descr) = imp.find_module(tgt, path)

Lib/modulefinder.py
482:        return imp.find_module(name, path)

Lib/pkgutil.py
229:            file, filename, etc = imp.find_module(subname, path)

Lib/test/test_imp.py
59:            with imp.find_module('module_' + mod, self.test_path)[0] as fd:
64:            imp.find_module('badsyntax_pep3120', path)
68:            fp, filename, info  = imp.find_module('module_' + mod,
77:        fp, filename, info = imp.find_module("tokenize")
91:            file, filename, info = imp.find_module(temp_mod_name)
147:            file, filename, info = imp.find_module(temp_mod_name)
187:                          imp.find_module, "badsyntax_pep3120", [path])
201:            x = imp.find_module("os")
213:        x = imp.find_module(example)
223:        fileobj, pathname, description = imp.find_module(m)

Lib/test/test_import.py
128:                imp.find_module, TESTFN, ["."])

Lib/test/test_importhooks.py
118:            file, filename, stuff = imp.find_module(subname, path)