UMFPack tests are now part of SuiteSparse tests

dune/solvers/test/CMakeLists.txt

@@ -20,7 +20,7 @@ endif()
 
 set(TESTS ${OTHER_TESTS} ${GRID_BASED_TESTS})
 
-if(UMFPACK_FOUND)
+if(SuiteSparse_UMFPACK_FOUND)
   list(APPEND TESTS umfpacksolvertest)
 endif()
 
@@ -28,10 +28,6 @@ foreach(_test ${TESTS})
   dune_add_test(SOURCES ${_test}.cc)
 endforeach()
 
-if(UMFPACK_FOUND)
-  add_dune_umfpack_flags(umfpacksolvertest)
-endif()
-
 if(HAVE_IPOPT)
   foreach(_test ${TESTS_IPOPT})
     add_dune_ipopt_flags(${_test})