Skip tests in PyPy that don't make sense to test.

test/test_python_errors.py

@@ -7,9 +7,15 @@ import warnings
 import pytest
 
 import parso
+from parso._compatibility import is_pypy
 from .failing_examples import FAILING_EXAMPLES, indent, build_nested
 
 
+if is_pypy:
+    # The errors in PyPy might be different. Just skip the module for now.
+    pytestmark = pytest.mark.skip()
+
+
 def _get_error_list(code, version=None):
     grammar = parso.load_grammar(version=version)
     tree = grammar.parse(code)