Revert "patched Eigen JacobiaSVD struct declaration to class to stopy compiler griping"
Revert "patched Eigen JacobiaSVD struct declaration to class to stopy compiler griping"

This reverts commit 396b1afe37d8b7f9bae03902d859f04aa11da9a4.

stan-dev/math,stan-dev/math,stan-dev/stan,stan-dev/math,stan-dev/math,stan-dev/stan,stan-dev/math,stan-dev/stan,stan-dev/math,stan-dev/math,stan-dev/stan,stan-dev/stan,stan-dev/math,stan-dev/math