Supress a certain log in /var/log/ltm

mohmazen I believe what you are looking for is the following, specifically the SSL section. Most likely yours is set at the default level and would require being lowered so that that message no longer appears.

https://my.f5.com/manage/s/article/K5532

Now for the question. Why are you wanting to surpress this from your logs? The reason I ask is because this typically means you have some sort of issue that should be fixed rather than ignored.