Go to whatever directory that you keep your Infinity Evolved modpack in, go to the folder "Scripts", open it up with any notepad application, (Notepad++, Sublime, etc) and scroll down until you see this:
#remove enderthermic pump
recipes.remove(<ExtraUtilities:enderThermicPump>);
and remove it from the file and save the file. GG
If it's through FTP that you are hosting the server, just do the same thing and restart the server. Make sure it's done with both client and server because it will disable the recipe through client side even though it's not disabled anymore