Well as you know it is impossible to delete Recycle Bin but if you terribly want to remove it here is a way to do it.
Step 1: Go to RUN and type “regedit.exe” (without quotes)
Step 2: Now navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\
Step 3: Simple delete the above given file and restart. NOW RECYCLE BIN IS REMOVED !!!