Removed Eigen dox file not in develop.

gtsam/3rdparty/Eigen/doc/LinearLeastSquares.dox

@@ -1,27 +0,0 @@
-namespace Eigen {
-
-/** \eigenManualPage LinearLeastSquares Solving linear least squares problems
-
-lede
-
-\eigenAutoToc
-
-\section LinearLeastSquaresCopied Copied
-
-The best way to do least squares solving is with a SVD decomposition. Eigen provides one as the JacobiSVD class, and its solve()
-is doing least-squares solving.
-
-Here is an example:
-<table class="example">
-<tr><th>Example:</th><th>Output:</th></tr>
-<tr>
-  <td>\include TutorialLinAlgSVDSolve.cpp </td>
-  <td>\verbinclude TutorialLinAlgSVDSolve.out </td>
-</tr>
-</table>
-
-For more information, including faster but less reliable methods, read our page concentrating on \ref LinearLeastSquares "linear least squares problems".
-
-*/
-
-}