Removing Event Receivers Attached to a SharePoint List 2013

To remove any event receivers from the custom list,shoot the following power shell commands.

$spWeb = Get-SPWeb Identity http://mySite

$spList = $spWeb.Lists["Custom List"]

$spList.EventReceivers | Select Name, Assembly, Type

$eventsCount = $spList.EventReceivers.Count

for ($i = $eventsCount-1; $i -ge 0; $i--)

{

$spList.EventReceivers[$i].Delete()

}

$spList.Update()