remove py25 on tox file

[avelino]

No description provided.

[avelino]

fixed build

/home/travis/build/bottlepy/bottle/bottle.py:188: DeprecationWarning: Python 2.5 and 3.1 support will be dropped in future versions of Bottle.

  warnings.warn(msg, DeprecationWarning)

Warning: The 'fast' keyword skipps server tests.

WARNING: No Mako template support. Skipping tests.

/home/travis/build/bottlepy/bottle/test/test_jinja2.py:18: Warning: 'with' will become a reserved keyword in Python 2.6

Traceback (most recent call last):

  File "test/testall.py", line 8, in <module>

    import test

  File "/home/travis/build/bottlepy/bottle/test/__init__.py", line 21, in <module>

    suite = unittest.defaultTestLoader.loadTestsFromNames([n[:-3] for n in glob('test_*.py')])

  File "/usr/lib/python2.5/unittest.py", line 565, in loadTestsFromNames

    suites = [self.loadTestsFromName(name, module) for name in names]

  File "/usr/lib/python2.5/unittest.py", line 533, in loadTestsFromName

    module = __import__('.'.join(parts_copy))

  File "/home/travis/build/bottlepy/bottle/test/test_jinja2.py", line 18

    with chdir(__file__):

             ^

SyntaxError: invalid syntax

The command "python${PY:-} test/testall.py fast" exited with 1.

Done. Your build exited with 1.