diff --git a/_pytest/main.py b/_pytest/main.py
index 4bddf1e2d..f05fa74b0 100644
--- a/_pytest/main.py
+++ b/_pytest/main.py
@@ -363,24 +363,6 @@ class Node(object):
     def teardown(self):
         pass
 
-    def _memoizedcall(self, attrname, function):
-        exattrname = "_ex_" + attrname
-        failure = getattr(self, exattrname, None)
-        if failure is not None:
-            py.builtin._reraise(failure[0], failure[1], failure[2])
-        if hasattr(self, attrname):
-            return getattr(self, attrname)
-        try:
-            res = function()
-        except py.builtin._sysex:
-            raise
-        except:
-            failure = sys.exc_info()
-            setattr(self, exattrname, failure)
-            raise
-        setattr(self, attrname, res)
-        return res
-
     def listchain(self):
         """ return list of all parent collectors up to self,
             starting from root of collection tree. """
diff --git a/_pytest/pytester.py b/_pytest/pytester.py
index 674adca94..2c558183b 100644
--- a/_pytest/pytester.py
+++ b/_pytest/pytester.py
@@ -22,6 +22,11 @@ from _pytest.main import Session, EXIT_OK
 from _pytest.assertion.rewrite import AssertionRewritingHook
 
 
+PYTEST_FULLPATH = os.path.abspath(
+    pytest.__file__.rstrip("oc")
+    ).replace("$py.class", ".py")
+
+
 def pytest_addoption(parser):
     # group = parser.getgroup("pytester", "pytester (self-tests) options")
     parser.addoption('--lsof',
@@ -35,14 +40,6 @@ def pytest_addoption(parser):
 
 
 def pytest_configure(config):
-    # This might be called multiple times. Only take the first.
-    global _pytest_fullpath
-    try:
-        _pytest_fullpath
-    except NameError:
-        _pytest_fullpath = os.path.abspath(pytest.__file__.rstrip("oc"))
-        _pytest_fullpath = _pytest_fullpath.replace("$py.class", ".py")
-
     if config.getvalue("lsof"):
         checker = LsofFdLeakChecker()
         if checker.matching_platform():
@@ -971,7 +968,7 @@ class Testdir:
     def _getpytestargs(self):
         # we cannot use "(sys.executable,script)"
         # because on windows the script is e.g. a pytest.exe
-        return (sys.executable, _pytest_fullpath,)  # noqa
+        return (sys.executable, PYTEST_FULLPATH) # noqa
 
     def runpython(self, script):
         """Run a python script using sys.executable as interpreter.