BLD: fixes error in tests on amd64 (because of open file handle)

Author: jreback

pandas/io/tests/test_pytables.py

@@ -1818,7 +1818,10 @@ def do_copy(f = None, new_f = None, keys = None, propindexes = True, **kwargs):
                 store.close()
                 tstore.close()
                 import os
-                os.remove(new_f)
+                try:
+                    os.remove(new_f)
+                except:
+                    pass
 
         do_copy()
         do_copy(keys = ['df'])