@VijayBhargavR8067 No one document as far as I know, the release notes of each version would show what has been depreciated.
In recent versions of AnyConnect and ASA/FTD software Cisco removed the older, weaker, insecure ciphers. So if you want to know about what ciphers the older versions of AnyConnect 4.0 support, then the likely answer will be that they support all the weaker ciphers (3DES, DES, MD5 etc) that you are unlikely to want to use.
You'll want to use the latest AnyConnect, ASA or FTD software.