I don't know if this is what you are looking for or not, but in the Feature Manager, right click on Annotations, and make sure "Show Feature Dimensions" is un-checked.
I'm not sure what kind of dimensions those are, but right-click on "Annotations" at the top of the tree and start de-selecting things, and I think they'll go away.
I don't know if this is what you are looking for or not, but in the Feature Manager, right click on Annotations, and make sure "Show Feature Dimensions" is un-checked.