SET NOCOUNT ON;  
  
DECLARE @session_name sysname,
		@cmd nvarchar(max);

DECLARE session_list CURSOR FOR
SELECT 
	[name]
FROM sys.server_event_sessions
where [name] LIKE 'RDT1C_%_%';

OPEN session_list;

FETCH NEXT FROM session_list   
INTO @session_name  
  
WHILE @@FETCH_STATUS = 0  
BEGIN

	SET @cmd = 'DROP EVENT SESSION ' + @session_name + ' ON SERVER;';
	EXECUTE sp_executesql @cmd

	FETCH NEXT FROM session_list   
	INTO @session_name

END

CLOSE session_list;  
DEALLOCATE session_list;