diff --git a/porting/nimble/include/os/os_trace_api.h b/porting/nimble/include/os/os_trace_api.h
index e88710b59..4f1aa03cf 100644
--- a/porting/nimble/include/os/os_trace_api.h
+++ b/porting/nimble/include/os/os_trace_api.h
@@ -45,36 +45,6 @@ os_trace_isr_exit(void)
 {
 }
 
-static inline void
-os_trace_task_info(const struct os_task *t)
-{
-}
-
-static inline void
-os_trace_task_create(const struct os_task *t)
-{
-}
-
-static inline void
-os_trace_task_start_exec(const struct os_task *t)
-{
-}
-
-static inline void
-os_trace_task_stop_exec(void)
-{
-}
-
-static inline void
-os_trace_task_start_ready(const struct os_task *t)
-{
-}
-
-static inline void
-os_trace_task_stop_ready(const struct os_task *t, unsigned reason)
-{
-}
-
 static inline void
 os_trace_idle(void)
 {