remove unused vector variable

diff --git a/examples/step-37/step-37.cc b/examples/step-37/step-37.cc
index e987776ac1b095e2ec40b49c626b549017a0df3f..f74f388bf7f9b605c08fe0d7ff737b9cdb9cb01b 100644 (file)
--- a/examples/step-37/step-37.cc
+++ b/examples/step-37/step-37.cc
@@ -727,7 +727,6 @@ namespace Step37
     MGLevelObject<LevelMatrixType>             mg_matrices;
 
     LinearAlgebra::distributed::Vector<double> solution;
-    LinearAlgebra::distributed::Vector<double> solution_update;
     LinearAlgebra::distributed::Vector<double> system_rhs;
 
     double                                     setup_time;