Update superannotate.sdk.rst

Author: VaghinakDev

docs/source/superannotate.sdk.rst

@@ -71,6 +71,7 @@ ______
 .. automethod:: superannotate.SAClient.attach_items
 .. automethod:: superannotate.SAClient.copy_items
 .. automethod:: superannotate.SAClient.move_items
+.. automethod:: superannotate.SAClient.delete_items
 .. automethod:: superannotate.SAClient.assign_items
 .. automethod:: superannotate.SAClient.unassign_items
 .. automethod:: superannotate.SAClient.get_item_metadata
@@ -404,4 +405,4 @@ Utility functions
 --------------------------------
 
 .. autofunction:: superannotate.SAClient.consensus
-.. autofunction:: superannotate.SAClient.benchmark
+.. autofunction:: superannotate.SAClient.benchmark