SQL Server log for revoke statements
SQL server does not trace revoke or deletes by default. In order to trace those activities, you need to run a server side trace (or XEvents as Aaron pointed out).

Below trace will help you to find command (Text), start date, end date, login, database (I have filtered it for test_kin), and many other fields.

Adjust the filters as per your need and environment. Also, specify how big the trace file would be through @maxfilesize.

/****************************************************/
/* Created by: SQL Server 2014 Profiler          */
/****************************************************/


-- Create a Queue
declare @rc int
declare @TraceID int
declare @maxfilesize bigint
set @maxfilesize = 100

-- Please replace the text InsertFileNameHere, with an appropriate
-- filename prefixed by a path, e.g., c:\MyFolder\MyTrace. The .trc extension
-- will be appended to the filename automatically. If you are writing from
-- remote server to local drive, please use UNC path and make sure server has
-- write access to your network share

exec @rc = sp_trace_create @TraceID output, 0, N'InsertFileNameHere', @maxfilesize, NULL 
if (@rc != 0) goto error

-- Client side File and Table cannot be scripted

-- Set the events
declare @on bit
set @on = 1
exec sp_trace_setevent @TraceID, 14, 1, @on
exec sp_trace_setevent @TraceID, 14, 12, @on
exec sp_trace_setevent @TraceID, 14, 14, @on
exec sp_trace_setevent @TraceID, 15, 12, @on
exec sp_trace_setevent @TraceID, 15, 14, @on
exec sp_trace_setevent @TraceID, 17, 1, @on
exec sp_trace_setevent @TraceID, 17, 12, @on
exec sp_trace_setevent @TraceID, 17, 14, @on
exec sp_trace_setevent @TraceID, 11, 2, @on
exec sp_trace_setevent @TraceID, 11, 12, @on
exec sp_trace_setevent @TraceID, 11, 14, @on
exec sp_trace_setevent @TraceID, 13, 1, @on
exec sp_trace_setevent @TraceID, 13, 12, @on
exec sp_trace_setevent @TraceID, 13, 14, @on
exec sp_trace_setevent @TraceID, 41, 1, @on
exec sp_trace_setevent @TraceID, 41, 3, @on
exec sp_trace_setevent @TraceID, 41, 4, @on
exec sp_trace_setevent @TraceID, 41, 6, @on
exec sp_trace_setevent @TraceID, 41, 7, @on
exec sp_trace_setevent @TraceID, 41, 8, @on
exec sp_trace_setevent @TraceID, 41, 10, @on
exec sp_trace_setevent @TraceID, 41, 11, @on
exec sp_trace_setevent @TraceID, 41, 12, @on
exec sp_trace_setevent @TraceID, 41, 13, @on
exec sp_trace_setevent @TraceID, 41, 14, @on
exec sp_trace_setevent @TraceID, 41, 15, @on
exec sp_trace_setevent @TraceID, 41, 17, @on
exec sp_trace_setevent @TraceID, 41, 26, @on
exec sp_trace_setevent @TraceID, 41, 35, @on
exec sp_trace_setevent @TraceID, 41, 41, @on
exec sp_trace_setevent @TraceID, 41, 48, @on
exec sp_trace_setevent @TraceID, 41, 50, @on
exec sp_trace_setevent @TraceID, 41, 64, @on
exec sp_trace_setevent @TraceID, 40, 1, @on
exec sp_trace_setevent @TraceID, 40, 9, @on
exec sp_trace_setevent @TraceID, 40, 3, @on
exec sp_trace_setevent @TraceID, 40, 4, @on
exec sp_trace_setevent @TraceID, 40, 5, @on
exec sp_trace_setevent @TraceID, 40, 6, @on
exec sp_trace_setevent @TraceID, 40, 7, @on
exec sp_trace_setevent @TraceID, 40, 8, @on
exec sp_trace_setevent @TraceID, 40, 10, @on
exec sp_trace_setevent @TraceID, 40, 11, @on
exec sp_trace_setevent @TraceID, 40, 12, @on
exec sp_trace_setevent @TraceID, 40, 14, @on
exec sp_trace_setevent @TraceID, 40, 26, @on
exec sp_trace_setevent @TraceID, 40, 29, @on
exec sp_trace_setevent @TraceID, 40, 30, @on
exec sp_trace_setevent @TraceID, 40, 35, @on
exec sp_trace_setevent @TraceID, 40, 41, @on
exec sp_trace_setevent @TraceID, 40, 49, @on
exec sp_trace_setevent @TraceID, 40, 50, @on
exec sp_trace_setevent @TraceID, 40, 51, @on
exec sp_trace_setevent @TraceID, 40, 55, @on
exec sp_trace_setevent @TraceID, 40, 60, @on
exec sp_trace_setevent @TraceID, 40, 61, @on
exec sp_trace_setevent @TraceID, 40, 64, @on
exec sp_trace_setevent @TraceID, 40, 66, @on


-- Set the Filters
declare @intfilter int
declare @bigintfilter bigint

exec sp_trace_setfilter @TraceID, 35, 0, 6, N'test_kin'
-- Set the trace status to start
exec sp_trace_setstatus @TraceID, 1

-- display trace id for future references
select TraceID=@TraceID
goto finish

error: 
select ErrorCode=@rc

finish: 
go


Below is the screen shot :