diff --git a/octavia_tempest_plugin/hacking/checks.py b/octavia_tempest_plugin/hacking/checks.py
index eec7476..7008994 100644
--- a/octavia_tempest_plugin/hacking/checks.py
+++ b/octavia_tempest_plugin/hacking/checks.py
@@ -66,8 +66,6 @@
 no_eventlet_re = re.compile(r'(import|from)\s+[(]?eventlet')
 no_line_continuation_backslash_re = re.compile(r'.*(\\)\n')
 no_logging_re = re.compile(r'(import|from)\s+[(]?logging')
-import_mock_re = re.compile(r"\bimport[\s]+mock\b")
-import_from_mock_re = re.compile(r"\bfrom[\s]+mock[\s]+import\b")
 
 
 def _translation_checks_not_enforced(filename):
@@ -147,7 +145,7 @@
     O339
     """
     if logical_line.startswith('LOG.warn('):
-        yield(0, "O339:Use LOG.warning() rather than LOG.warn()")
+        yield (0, "O339:Use LOG.warning() rather than LOG.warn()")
 
 
 @core.flake8ext
@@ -260,18 +258,3 @@
     if no_logging_re.match(logical_line):
         msg = 'O348 Usage of Python logging module not allowed, use oslo_log'
         yield logical_line.index('logging'), msg
-
-
-@core.flake8ext
-def check_no_import_mock(logical_line):
-    """O349 - Test code must not import mock library.
-
-    :param logical_line: The logical line to check.
-    :returns: None if the logical line passes the check, otherwise a tuple
-              is yielded that contains the offending index in logical line
-              and a message describe the check validation failure.
-    """
-    if (import_mock_re.match(logical_line) or
-            import_from_mock_re.match(logical_line)):
-        msg = 'O349 Test code must not import mock library, use unittest.mock'
-        yield 0, msg