Remove outdated comment (#110)

This comment was made incorrect by #107

fidget/src/core/eval/bulk.rs

@@ -3,11 +3,6 @@
 //! Doing bulk evaluations helps limit to overhead of instruction dispatch, and
 //! can take advantage of SIMD.
 //!
-//! A bulk evaluator expects to be given **many single points**, i.e. the X, Y,
-//! Z inputs are always `&[f32]`.  The output may be of a different type, e.g.
-//! partial derivatives with respect to X/Y/Z
-//! in [`Shape::GradSliceEval`](crate::eval::Shape::GradSliceEval).
-//!
 //! It is unlikely that you'll want to use these traits or types directly;
 //! they're implementation details to minimize code duplication.