* re-enabled deprecation warning on msvc now that eigen isn't using functions microsoft deems deprecated

Eigen/src/Core/util/DisableMSVCWarnings.h

diff --git a/Eigen/src/Core/util/DisableMSVCWarnings.h b/Eigen/src/Core/util/DisableMSVCWarnings.h
index 1b2d4c4..e6c653d 100644
--- a/Eigen/src/Core/util/DisableMSVCWarnings.h
+++ b/Eigen/src/Core/util/DisableMSVCWarnings.h
@@ -3,7 +3,7 @@
 
 #ifdef _MSC_VER
   #pragma warning( push )
-  #pragma warning( disable : 4181 4244 4127 4211 4996 )
+  #pragma warning( disable : 4181 4244 4127 4211 )
 #endif
 
 #endif // EIGEN_DISABLEMSVCWARNINGS_H
\ No newline at end of file