>>>> So why would there still be any IBMi 7.5 components still be in this config as it shows the config to currently be running IBMi 7.6? <<<<
It is the e-Config tool user's responsibility to ensure the "clean" base config used as the starting point for upgrade process. You use "Validate" and "Edit" functions in e-Config remove or add any feature codes that makes a clean base config. Manual edit of the base config requires sufficient knowledge and experience using the tool. If you are an inexperience IBM BP, I suggest you seek advice from an IBM i sales or tech sales who know enough about using e-Config tool?
>>>> where can we remove EB75? <<<<
e-Config tool provides you with the ability to "edit" the base config manually. Look for the "Edit" button (if this word is still used.) .