It was removed because of what it means. What does it mean?
Here we can rely on the clear meaning of the text.
Beyond that, the purpose of the paragraph was to give the slave states - all 13 of them - the opportunity to include in the DOI a charge that slavery, and the slave trade, was the fault of the British. And to incentivize citizen support for the revolution by referencing the King's involvement in “exciting those very people to rise in arms among us” - in other words, slave rebellions.
The question you and I have to ask is why did the slave states want to wreck this paragraph?