Remove commands from zsh startup procedure

I've been trying to speed up my zsh terminal, and I've found this list of processes that's run when my shell starts:

I've been trying to eliminate as many of these as possible - of obvious concern are the first two, taking up over half of the startup time. However, I can't find a way to disable them (I've already set skip_global_compinit=1 in my zshenv). How can I remove these commands from my zsh startup to speed it up?