diff --git a/e2e/keywords/k8s.resource b/e2e/keywords/k8s.resource
index a0519cb47..d85caf8c1 100644
--- a/e2e/keywords/k8s.resource
+++ b/e2e/keywords/k8s.resource
@@ -101,14 +101,6 @@ Force drain node ${node_id} and expect success
     Set Test Variable    ${instance_manager_name}
     Set Test Variable    ${drained_node}
 
-#Force drain node ${node_id} and wait for ${duration} second
-#    ${drained_node} =    get_node_by_index    ${node_id}
-#    ${instance_manager_name} =     get_instance_manager_on_node    ${drained_node}
-#    ${drain_process} =    force_drain_node_and_wait    ${drained_node}    ${duration}
-#    Set Test Variable    ${drain_process}
-#    Set Test Variable    ${instance_manager_name}
-#    Set Test Variable    ${drained_node}
-
 The drain process not completed
     check_drain_process_not_completed    ${drain_process}
 
diff --git a/e2e/libs/k8s/k8s.py b/e2e/libs/k8s/k8s.py
index bdaac74ea..3002c83e5 100644
--- a/e2e/libs/k8s/k8s.py
+++ b/e2e/libs/k8s/k8s.py
@@ -10,8 +10,6 @@
 from utility.utility import subprocess_exec_cmd
 from utility.utility import logging
 from utility.utility import get_retry_count_and_interval
-from utility.utility import check_popen_process_not_completed
-from utility.utility import check_popen_process_completed
 from utility.utility import subprocess_exec_cmd_with_timeout
 from robot.libraries.BuiltIn import BuiltIn
 
@@ -82,12 +80,6 @@ def check_node_cordoned(node_name):
     node = api.read_node(node_name)
     assert node.spec.unschedulable is True, f"node {node_name} is not cordoned."
 
-def check_drain_process_not_completed(drain_process):
-    check_popen_process_not_completed(drain_process)
-
-def check_drain_process_completed(drain_process):
-    check_popen_process_completed(drain_process)
-
 def get_instance_manager_on_node(node_name):
     data_engine = BuiltIn().get_variable_value("${DATA_ENGINE}")
     pods = get_all_pods_on_node(node_name)
diff --git a/e2e/libs/utility/utility.py b/e2e/libs/utility/utility.py
index 2381ded36..1aa95847f 100644
--- a/e2e/libs/utility/utility.py
+++ b/e2e/libs/utility/utility.py
@@ -289,25 +289,3 @@ def get_name_suffix(*args):
         if arg:
             suffix += f"-{arg}"
     return suffix
-
-
-def check_popen_process_not_completed(process):
-    assert process.poll() is None, f"process {process} terminated which is not expected."
-
-
-def check_popen_process_completed(process):
-    retry_count, retry_interval = get_retry_count_and_interval()
-    for i in range(retry_count):
-        if process.poll() is not None:
-            return
-        time.sleep(retry_interval)
-    assert process.poll() is not None, f"process {process} not terminated which is not expected."
-
-
-def get_popen_process_error_log(drain_process):
-    if drain_process.poll() is None:
-        drain_process.terminate()
-
-    stdout, stderr = drain_process.communicate()
-    logging(f"{stderr.decode('utf-8')}")
-    return stderr.decode('utf-8')