No need to launch the document indexing task

on document state log entries deletion.

Signed-off-by: Roberto Rosario <roberto.rosario.gonzalez@gmail.com>

mayan/apps/document_states/apps.py

@@ -1,7 +1,7 @@
 from __future__ import unicode_literals
 
 from django.apps import apps
-from django.db.models.signals import post_delete, post_save
+from django.db.models.signals import pre_delete, post_delete, post_save
 from django.utils.translation import ugettext_lazy as _
 
 from kombu import Exchange, Queue
@@ -243,11 +243,6 @@ class DocumentStatesApp(MayanAppConfig):
 
         # Index updating
 
-        post_delete.connect(
-            handler_index_document,
-            dispatch_uid='handler_index_document_delete',
-            sender=WorkflowInstanceLogEntry
-        )
         post_save.connect(
             handler_index_document,
             dispatch_uid='handler_index_document_save',