diff --git a/daliuge-translator/dlg/dropmake/pg_generator.py b/daliuge-translator/dlg/dropmake/pg_generator.py
index 52ca64252..4b96bd723 100644
--- a/daliuge-translator/dlg/dropmake/pg_generator.py
+++ b/daliuge-translator/dlg/dropmake/pg_generator.py
@@ -28,38 +28,11 @@
 if __name__ == "__main__":
     __package__ = "dlg.dropmake"
 
-import collections
-import datetime
 import json
 import logging
 import string
 import time
-from collections import defaultdict
-from itertools import product
-from typing import ValuesView
-
-import networkx as nx
-import numpy as np
-
-from .scheduler import MySarkarScheduler, DAGUtil, MinNumPartsScheduler, PSOScheduler
-from .utils.bash_parameter import BashCommand
-from ..common import dropdict
-from ..common import Categories, DropType
-from .dm_utils import (
-    LG_APPREF,
-    getNodesKeyDict,
-    get_lg_ver_type,
-    convert_construct,
-    convert_fields,
-    convert_mkn,
-    getAppRefInputs,
-    LG_VER_EAGLE,
-    LG_VER_EAGLE_CONVERTED,
-)
-from .utils.bash_parameter import BashCommand
-from ..common import Categories
-from ..common import STORAGE_TYPES, APP_DROP_TYPES
-from ..common import dropdict
+
 from dlg.dropmake.lg import LG, GraphException
 from dlg.dropmake.pgt import PGT
 from dlg.dropmake.pgtp import MetisPGTP, MySarkarPGTP, MinNumPartsPGTP, PSOPGTP
diff --git a/daliuge-translator/dlg/dropmake/scheduler.py b/daliuge-translator/dlg/dropmake/scheduler.py
index 693f284af..9859df33f 100644
--- a/daliuge-translator/dlg/dropmake/scheduler.py
+++ b/daliuge-translator/dlg/dropmake/scheduler.py
@@ -23,7 +23,6 @@
 import logging
 import os
 import platform
-import random
 import time
 from collections import defaultdict