PROTON-2103: [Python] Fix abstract_server example import
diff --git a/python/examples/abstract_server.py b/python/examples/abstract_server.py
index 138ef66..f536486 100755
--- a/python/examples/abstract_server.py
+++ b/python/examples/abstract_server.py
@@ -18,10 +18,9 @@
# under the License.
#
-from __future__ import absolute_import
from __future__ import print_function
-from .proton_server import Server
+from proton_server import Server
class Application(Server):
def __init__(self, host, address):
