The more important parts removed are those from Section 9. That includes the Writ of Habeas Corpus, prohibition of ex post facto laws, prohibition against pref

The more important parts removed are those from Section 9. That includes the Writ of Habeas Corpus, prohibition of ex post facto laws, prohibition against preferential treatment between states, the requirement that any money spent must be written into law, and the emoluments clause disallowing any federal officers from receiving gifts from foreign states. Of those I listed, the current administration has violated all except the ex post facto prohibition, perhaps only because the president doesn't write laws. That said, the act of removing the text from the website is not by itself a reason to become too concerned, both because it's a relatively minor offense (you can still find the full text in dozens of other locations) and because it's better to assume incompetence rather than malice caused said change.