diff --git a/rich/progress.py b/rich/progress.py
index 2c79bf6c..f3161c93 100644
--- a/rich/progress.py
+++ b/rich/progress.py
@@ -35,10 +35,6 @@ from .table import Table
 from .text import Text
 
 
-def monotonic():
-    1 / 0
-
-
 TaskID = NewType("TaskID", int)
 
 ProgressType = TypeVar("ProgressType")