All the functionality in Miscellaneous`Geodesy` is now available in the built-in Mathematica kernel.
All the functionality of Miscellaneous`Units`is now available in the newly created Units Package.
The functionality of FactorIntegerECM can be obtained using the enhanced Mathematica kernel function FactorInteger.
Recognize is now available as the newly added built-in Mathematica kernel function RootApproximant.
SiegelTheta is now available as the newly added built-in Mathematica kernel function SiegelTheta.
All the functionality of NumericalMath`NResidue` is now available in the newly created Numerical Calculus Package.
All of the functionality in Utilities`Benchmark` is now available through the newly created Benchmarking Package.
The functionality of FilterOptions is provided by the kernel function FilterRules.
NotationMakeBoxes is a private version of MakeBoxes.