removing couchdb extension as it is not mature

bonobo/ext/couchdb_.py

@@ -1,60 +0,0 @@
-from bonobo import inject
-
-try:
-    import couchdb
-except ImportError as e:
-    import logging
-
-    logging.exception('You must install couchdb to use the bonobo couchdb extension. Easiest way is to install the '
-                      'optional "couchdb" dependencies with «pip install bonobo[couchdb]», but you can also install a '
-                      'specific version by yourself.')
-
-import datetime
-
-from bonobo import service
-
-
-@service
-def client(username, password):
-    client = couchdb.Server()
-    client.resource.credentials = (
-        username,
-        password, )
-    return client
-
-
-@service
-@inject(client)
-def database(client, name):
-    return client[name]
-
-
-def json_datetime(dt=None):
-    dt = dt or datetime.datetime.now()
-    return dt.replace(microsecond=0).isoformat() + 'Z'
-
-
-@inject(database)
-def query(db, map, reduce, *args, **kwargs):
-    pass
-
-
-cli1 = client.define('admin', 'admin')
-cli2 = client.define('foo', 'bar')
-
-
-@inject(client[cli1])
-def print_db(db):
-    print(db)
-
-
-@inject(client[cli2])
-def print_db2(db):
-    print(db)
-
-
-if __name__ == '__main__':
-    print_db()
-    print_db2()
-    print_db()
-    print_db2()