remove sentence "Eigen itself is part of the KDE project."

Eigen/Core

Eigen/StdVector

Eigen/src/Array/BooleanRedux.h

Eigen/src/Array/CwiseOperators.h

Eigen/src/Array/Functors.h

Eigen/src/Array/Norms.h

Eigen/src/Array/PartialRedux.h

Eigen/src/Array/Random.h

Eigen/src/Array/Replicate.h

Eigen/src/Array/Reverse.h

Eigen/src/Array/Select.h

Eigen/src/Cholesky/CholeskyInstantiations.cpp

Eigen/src/Cholesky/LDLT.h

Eigen/src/Cholesky/LLT.h

Eigen/src/Core/Assign.h

Eigen/src/Core/Block.h

Eigen/src/Core/Coeffs.h

Eigen/src/Core/CommaInitializer.h

Eigen/src/Core/CoreInstantiations.cpp

Eigen/src/Core/Cwise.h