remove trailing whitespace everywhere

--HG--
branch : trunk

py/_plugin/pytest_assertion.py

@@ -3,15 +3,15 @@ import sys
 
 def pytest_addoption(parser):
     group = parser.getgroup("debugconfig")
-    group._addoption('--no-assert', action="store_true", default=False, 
-        dest="noassert", 
+    group._addoption('--no-assert', action="store_true", default=False,
+        dest="noassert",
         help="disable python assert expression reinterpretation."),
 
 def pytest_configure(config):
     if not config.getvalue("noassert") and not config.getvalue("nomagic"):
         warn_about_missing_assertion()
         config._oldassertion = py.builtin.builtins.AssertionError
-        py.builtin.builtins.AssertionError = py.code._AssertionError 
+        py.builtin.builtins.AssertionError = py.code._AssertionError
 
 def pytest_unconfigure(config):
     if hasattr(config, '_oldassertion'):