--- a/env/lib/python3.7/site-packages/planemo/database/interface.py	Thu May 14 16:47:39 2020 -0400
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,36 +0,0 @@
-"""Describe the interface classes of the planemo.database package."""
-
-import abc
-
-
-class DatabaseSource(object):
-    """Interface describing a source of profile databases."""
-
-    __metaclass__ = abc.ABCMeta
-
-    @abc.abstractmethod
-    def create_database(self, identifier):
-        """Create a database with specified short identifier.
-
-        Throw an exception if it already exists.
-        """
-
-    @abc.abstractmethod
-    def delete_database(self, identifier):
-        """Delete a database with specified short identifier.
-
-        Throw an exception if it already exists.
-        """
-
-    @abc.abstractmethod
-    def list_databases(self):
-        """Return identifiers associated with database source."""
-
-    @abc.abstractmethod
-    def sqlalchemy_url(self, identifier):
-        """Return a URL string for use by sqlalchemy."""
-
-
-__all__ = (
-    "DatabaseSource",
-)