diff --git a/tailbone/app.py b/tailbone/app.py
index d2d0c5ef..b7262866 100644
--- a/tailbone/app.py
+++ b/tailbone/app.py
@@ -62,17 +62,6 @@ def make_rattail_config(settings):
     # nb. this is for compaibility with wuttaweb
     settings['wutta_config'] = rattail_config
 
-    # must import all sqlalchemy models before things get rolling,
-    # otherwise can have errors about continuum TransactionMeta class
-    # not yet mapped, when relevant pages are first requested...
-    # cf. https://docs.pylonsproject.org/projects/pyramid_cookbook/en/latest/database/sqlalchemy.html#importing-all-sqlalchemy-models
-    # hat tip to https://stackoverflow.com/a/59241485
-    if getattr(rattail_config, 'tempmon_engine', None):
-        from rattail_tempmon.db import model as tempmon_model, Session as TempmonSession
-        tempmon_session = TempmonSession()
-        tempmon_session.query(tempmon_model.Appliance).first()
-        tempmon_session.close()
-
     # configure database sessions
     if hasattr(rattail_config, 'appdb_engine'):
         tailbone.db.Session.configure(bind=rattail_config.appdb_engine)