Remove nonexistent Python 3.5 path

Author: Erik Moeller

alembic/env.py

@@ -16,8 +16,6 @@
 # add your model's MetaData object here
 # for 'autogenerate' support
 sys.path.insert(0, path.realpath(path.join(path.dirname(__file__), '..')))
-# This path is purely for alembic to work on the packaged application
-sys.path.insert(1, "/opt/venvs/securedrop-client/lib/python3.5/site-packages")
 from securedrop_client.db import Base  # noqa
 target_metadata = Base.metadata