Remove EGR Computer

[carock]

Putting my 85 300CD back into shape. The EGR computer is shot, so I am jumping the EGR connector to power the tachometer. May as well remove the EGR valve since it isn't going to be activated anymore. I am also removing the trap oxidizer because I don't trust it for the long term

So my question is, what else can I remove to clean up the engine compartment since the EGR is going away? I was especially curious about the round diaphram on the turbo that is activated by vacuum. It has some sort of vacuum controller shared with the EGR vacuum supply.