Click to see Spoiler:
The whole thing in the beginning of the book with Dumbledore retrieving Harry from the Dursley's and having a conversation with them and telling Harry that he not only inherited Sirius's house but also his house-elf "Kreature" was taken out of the movie. Other scenes cut out of the movie were the whole hilarious scenes with the Weasleys and their being annoyed and almost disgusted that Bill was going to marry Fleur Delacor and Dumbledor's funeral at the end. Dobby was also not in the movie (he was in the book) and neither was Grawp or that blind as a bat professor that almost got fired by Umbridge in the last movie.