"Easy" is an adjective. The noun (and verb) form is "ease".
You cannot remove "it" from the sentence. It must be, "Do you find it easy to make new friends?" Notice that the verb form which follows an adjective is "to [verb]".
If you say, "Do you find easy...?", then I want to know "easy what? What's the noun?"
If you want to use a noun, then the question would be, "Do you make new friends with ease?"