Finishing removing parametriccurves directory.

include/parametriccurves/MathDefs.h

include/parametriccurves/abstract-curve.hpp

include/parametriccurves/bernstein.h

include/parametriccurves/bezier_curve.h

include/parametriccurves/constant.hpp

include/parametriccurves/curve-constraint.hpp

include/parametriccurves/helpers/effector_spline.h

include/parametriccurves/helpers/effector_spline_rotation.h

include/parametriccurves/infinite-const-acc.hpp

include/parametriccurves/infinite-sinusoid.hpp

include/parametriccurves/linear-chirp.hpp

include/parametriccurves/minimum-jerk.hpp

include/parametriccurves/optimization/OptimizeSpline.h

include/parametriccurves/polynomial.hpp

include/parametriccurves/serialization/archive.hpp

include/parametriccurves/serialization/eigen-matrix.hpp

include/parametriccurves/spatial/force-curve.hpp

include/parametriccurves/spline.hpp

include/parametriccurves/text-file.hpp

include/parametriccurves/utils/file-io.hpp