remove stupid assert in blue norm.

Eigen/src/Core/StableNorm.h

diff --git a/Eigen/src/Core/StableNorm.h b/Eigen/src/Core/StableNorm.h
index d8bf7db..7499b19 100644
--- a/Eigen/src/Core/StableNorm.h
+++ b/Eigen/src/Core/StableNorm.h
@@ -131,7 +131,6 @@
     abig = internal::sqrt(abig);
     if(abig > overfl)
     {
-      eigen_assert(false && "overflow");
       return rbig;
     }
     if(amed > RealScalar(0))