If you truly wish to delete them (wiping them from history, never to be seen any more), you can
run rebase:
git rebase -i HEAD~4
and then, just delete (or comment out) the lines corresponding to the commits you wish to delete, like so:
pick 2f05aba ... #will be preserved
#pick 3371cec ... #will be deleted
#pick daed25c ... #will be deleted
pick e2b2a84 ... #will be preserved