Reverting unwanted changes to the test suite

git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@166627 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/lldbtest.py b/test/lldbtest.py
index 22097b3..ea5a2a6 100644
--- a/test/lldbtest.py
+++ b/test/lldbtest.py
@@ -417,18 +417,9 @@
     accomplish things.
     
     """
-    mydir_ = None
 
-    @classmethod
-    def mydir_get(cls):
-        return cls.mydir_
-
-    @classmethod
-    def mydir_set(cls,val):
-        print "mydir_set"
-        cls.mydir_ = val
-
-    Base.mydir = property(mydir_get,mydir_set)
+    # The concrete subclass should override this attribute.
+    mydir = None
 
     # Keep track of the old current working directory.
     oldcwd = None