Remove query_by_type()

Missed these earlier.

stix2/datastore/__init__.py

@@ -99,25 +99,6 @@ class DataStoreMixin(object):
         except AttributeError:
             raise AttributeError('%s has no data source to query' % self.__class__.__name__)
 
-    def query_by_type(self, *args, **kwargs):
-        """Retrieve all objects of the given STIX object type.
-
-        Translate query_by_type() call to the appropriate DataSource call.
-
-        Args:
-            obj_type (str): The STIX object type to retrieve.
-            filters (list, optional): A list of additional filters to apply to
-                the query.
-
-        Returns:
-            list: The STIX objects that matched the query.
-
-        """
-        try:
-            return self.source.query_by_type(*args, **kwargs)
-        except AttributeError:
-            raise AttributeError('%s has no data source to query' % self.__class__.__name__)
-
     def creator_of(self, *args, **kwargs):
         """Retrieve the Identity refered to by the object's `created_by_ref`.
 
@@ -568,35 +549,6 @@ class CompositeDataSource(DataSource):
 
         return all_data
 
-    def query_by_type(self, *args, **kwargs):
-        """Retrieve all objects of the given STIX object type.
-
-        Federate the query to all DataSources attached to the
-        Composite Data Source.
-
-        Args:
-            obj_type (str): The STIX object type to retrieve.
-            filters (list, optional): A list of additional filters to apply to
-                the query.
-
-        Returns:
-            list: The STIX objects that matched the query.
-
-        """
-        if not self.has_data_sources():
-            raise AttributeError('CompositeDataSource has no data sources')
-
-        results = []
-        for ds in self.data_sources:
-            results.extend(ds.query_by_type(*args, **kwargs))
-
-        # remove exact duplicates (where duplicates are STIX 2.0
-        # objects with the same 'id' and 'modified' values)
-        if len(results) > 0:
-            results = deduplicate(results)
-
-        return results
-
     def relationships(self, *args, **kwargs):
         """Retrieve Relationships involving the given STIX object.