diff --git a/src/app/util/af-event.cpp b/src/app/util/af-event.cpp
index 9cc2b8495a71d4..31a87bae250fa5 100644
--- a/src/app/util/af-event.cpp
+++ b/src/app/util/af-event.cpp
@@ -120,19 +120,9 @@ void EventControlHandler(chip::System::Layer * systemLayer, void * appState)
     }
 }
 
-const char emAfStackEventString[] = "Stack";
-
 // *****************************************************************************
 // Functions
 
-// A function used to initialize events for idling
-void emAfInitEvents(void) {}
-
-const char * emberAfGetEventString(uint8_t index)
-{
-    return (index == 0XFF ? emAfStackEventString : emAfEventStrings[index]);
-}
-
 static EmberAfEventContext * findEventContext(EndpointId endpoint, ClusterId clusterId, bool isClient)
 {
 #if defined(EMBER_AF_GENERATED_EVENT_CONTEXT)
@@ -189,26 +179,6 @@ void emberEventControlSetActive(EmberEventControl * control)
 #endif
 }
 
-EmberStatus emberAfEventControlSetDelayQS(EmberEventControl * control, uint32_t delayQs)
-{
-    if (delayQs <= EMBER_MAX_EVENT_CONTROL_DELAY_QS)
-    {
-        return emberEventControlSetDelayMS(control, delayQs << 8);
-    }
-
-    return EMBER_BAD_ARGUMENT;
-}
-
-EmberStatus emberAfEventControlSetDelayMinutes(EmberEventControl * control, uint16_t delayM)
-{
-    if (delayM <= EMBER_MAX_EVENT_CONTROL_DELAY_MINUTES)
-    {
-        return emberEventControlSetDelayMS(control, static_cast<uint32_t>(delayM) << 16);
-    }
-
-    return EMBER_BAD_ARGUMENT;
-}
-
 EmberStatus emberAfScheduleTickExtended(EndpointId endpoint, ClusterId clusterId, bool isClient, uint32_t delayMs,
                                         EmberAfEventPollControl pollControl, EmberAfEventSleepControl sleepControl)
 {
@@ -278,54 +248,3 @@ EmberStatus emberAfDeactivateServerTick(EndpointId endpoint, ClusterId clusterId
 {
     return emberAfDeactivateClusterTick(endpoint, clusterId, EMBER_AF_SERVER_CLUSTER_TICK);
 }
-
-#define MS_TO_QS(ms) ((ms) >> 8)
-#define MS_TO_MIN(ms) ((ms) >> 16)
-#define QS_TO_MS(qs) ((qs) << 8)
-#define MIN_TO_MS(min) ((min) << 16)
-
-// Used to calculate the duration and unit used by the host to set the sleep timer
-void emAfGetTimerDurationAndUnitFromMS(uint32_t durationMs, uint16_t * duration, EmberEventUnits * units)
-{
-    if (durationMs <= MAX_TIMER_UNITS_HOST)
-    {
-        *duration = (uint16_t) durationMs;
-        *units    = EMBER_EVENT_MS_TIME;
-    }
-    else if (MS_TO_QS(durationMs) <= MAX_TIMER_UNITS_HOST)
-    {
-        *duration = (uint16_t)(MS_TO_QS(durationMs));
-        *units    = EMBER_EVENT_QS_TIME;
-    }
-    else
-    {
-        *duration = (MS_TO_MIN(durationMs) <= MAX_TIMER_UNITS_HOST ? (uint16_t)(MS_TO_MIN(durationMs)) : MAX_TIMER_UNITS_HOST);
-        *units    = EMBER_EVENT_MINUTE_TIME;
-    }
-}
-
-uint32_t emAfGetMSFromTimerDurationAndUnit(uint16_t duration, EmberEventUnits units)
-{
-    uint32_t ms;
-    if (units == EMBER_EVENT_MS_TIME)
-    {
-        ms = duration;
-    }
-    else if (units == EMBER_EVENT_QS_TIME)
-    {
-        ms = QS_TO_MS(static_cast<uint32_t>(duration));
-    }
-    else if (units == EMBER_EVENT_MINUTE_TIME)
-    {
-        ms = MIN_TO_MS(static_cast<uint32_t>(duration));
-    }
-    else if (units == EMBER_EVENT_ZERO_DELAY)
-    {
-        ms = 0;
-    }
-    else
-    {
-        ms = UINT32_MAX;
-    }
-    return ms;
-}
diff --git a/src/app/util/af-event.h b/src/app/util/af-event.h
index 655184af940da2..1b10e21b5887cd 100644
--- a/src/app/util/af-event.h
+++ b/src/app/util/af-event.h
@@ -53,18 +53,6 @@
  */
 typedef struct EmberEventData EmberEventData;
 
-// A function used to retrieve the proper NCP timer duration and unit based on a given
-// passed number of milliseconds.
-void emAfGetTimerDurationAndUnitFromMS(uint32_t durationMs, uint16_t * duration, EmberEventUnits * units);
-
-// A function (inverse of the above) to retrieve the number of milliseconds
-// represented by a given timer duration and unit.
-uint32_t emAfGetMSFromTimerDurationAndUnit(uint16_t duration, EmberEventUnits units);
-
-const char * emberAfGetEventString(uint8_t index);
-
-void emAfInitEvents(void);
-
 /** @brief Sets this ::EmberEventControl as inactive (no pending event).
  */
 void emberEventControlSetInactive(EmberEventControl * control);
diff --git a/src/app/util/af.h b/src/app/util/af.h
index 2575116f71df13..1749168135e435 100644
--- a/src/app/util/af.h
+++ b/src/app/util/af.h
@@ -808,22 +808,6 @@ EmberStatus emberEventControlSetDelayMS(EmberEventControl * control, uint32_t de
  */
 EmberStatus emberAfEventControlSetDelayQS(EmberEventControl * control, uint32_t delayQs);
 
-/**
- * @brief Sets the ::EmberEventControl to run "delayM" minutes in the future.
- * The 'minutes' are actually 65536 (0x10000) milliseconds long.  This function
- * first verifies that the delay is within the acceptable range before
- * scheduling the event.
- *
- * @param control a pointer to the event control.
- * @param delayM the number of minutes until the next event.
- *
- * @return If delayM is less than or equal to
-           ::EMBER_MAX_EVENT_CONTROL_DELAY_MINUTES, this function will schedule
-           the event and return ::EMBER_SUCCESS.  Otherwise it will return
-           ::EMBER_BAD_ARGUMENT.
- */
-EmberStatus emberAfEventControlSetDelayMinutes(EmberEventControl * control, uint16_t delayM);
-
 /**
  * @brief Sets the ::EmberEventControl for the current network, and only
  * the current network, as inactive.  See ::emberEventControlSetInactive.
@@ -856,12 +840,6 @@ EmberStatus emberAfNetworkEventControlSetDelay(EmberEventControl * controls, uin
 #else
 #define emberAfNetworkEventControlSetDelay(controls, delayMs) emberAfNetworkEventControlSetDelayMS(controls, delayMs);
 #endif
-/**
- * @brief Sets the ::EmberEventControl for the current network, and only the
- * current network, to run "delayQs" quarter seconds in the future.  See
- * ::emberAfEventControlSetDelayQS.
- */
-EmberStatus emberAfNetworkEventControlSetDelayQS(EmberEventControl * controls, uint32_t delayQs);
 /**
  * @brief Sets the ::EmberEventControl for the current network, and only the
  * current network, to run "delayM" minutes in the future.  See
diff --git a/src/app/util/util.cpp b/src/app/util/util.cpp
index 16ec51717cbe0d..54239e8e55d9d0 100644
--- a/src/app/util/util.cpp
+++ b/src/app/util/util.cpp
@@ -213,9 +213,6 @@ void emberAfInit(chip::Messaging::ExchangeManager * exchangeMgr)
     // Set up client API buffer.
     emberAfSetExternalBuffer(appResponseData, EMBER_AF_RESPONSE_BUFFER_LEN, &appResponseLength, &emberAfResponseApsFrame);
 
-    // initialize event management system
-    emAfInitEvents();
-
     MATTER_PLUGINS_INIT
 
     emAfCallInits();