Remove stdout check that fails under pypy.

This second E901 error actually only shows up in the test framework
and does not happen if you run the code within the Python interpreter.

Author: IanLee1521

testsuite/test_api.py

@@ -350,19 +350,12 @@ def test_styleguide_unmatched_triple_quotes(self):
         ]
 
         pep8style = pep8.StyleGuide()
-        count_errors = pep8style.input_file('stdin', lines=lines)
+        pep8style.input_file('stdin', lines=lines)
         stdout = sys.stdout.getvalue()
-        self.assertEqual(count_errors, 2)
 
         expected = 'stdin:2:5: E901 TokenError: EOF in multi-line string'
         self.assertTrue(expected in stdout)
 
-        expected = (
-            'stdin:2:26: '
-            'E901 SyntaxError: EOF while scanning triple-quoted string literal'
-        )
-        self.assertTrue(expected in stdout)
-
     def test_styleguide_continuation_line_outdented(self):
         pep8.register_check(DummyChecker, ['Z701'])
         lines = [