[preprocessor][cmake] Don't look for valgrind / HAVE_VALGRIND will always be false

cmake/modules/FindValgrind.cmake

-#
-# Module that checks whether Valgrind's header memcheck.h is present
-#
-# Variables used by this module which you may want to set:
-# VALGRIND_ROOT         Path list to search for memcheck.h
-#
-# Sets the follwing variable:
-#
-# Valgrind_FOUND          True if Valgrind was found
-# VALGRIND_INCLUDE_DIR    Path to Valgrind's include dirs.
-
-
-# look for header files, only at positions given by the user
-find_path(VALGRIND_INCLUDE_DIR
-  NAMES "valgrind/memcheck.h"
-  PATHS ${VALGRIND_ROOT}
-  PATH_SUFFIXES "include"
-  NO_DEFAULT_PATH
-)
-# look for header files, including default paths
-find_path(VALGRIND_INCLUDE_DIR
-  NAMES "valgrind/memcheck.h"
-  PATH_SUFFIXES "include"
-)
-
-# handle package arguments
-include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(
-  "Valgrind"
-  DEFAULT_MSG
-  VALGRIND_INCLUDE_DIR
-)
-
-# set HAVE_VALGRIND for config.h
-set(HAVE_VALGRIND ${Valgrind_FOUND})
-
-# register all Valgrind related flags
-if(Valgrind_FOUND)
-  dune_register_package_flags(INCLUDE_DIRS "${VALGRIND_INCLUDE_DIR}")
-endif()
-
-# text for feature summary
-set_package_properties("Valgrind" PROPERTIES
-  DESCRIPTION "Memory debugging, memory leak detection, profiling"
-  PURPOSE "Identify undefined variables with Memcheck")

config.h.cmake

@@ -43,9 +43,6 @@
 /* Define the path to dumux */
 #define DUMUX_SOURCE_DIR "${CMAKE_SOURCE_DIR}"
 
-/* Define to 1 if Valgrind was found */
-#cmakedefine HAVE_VALGRIND 1
-
 /* Define to 1 if gnuplot was found */
 #cmakedefine HAVE_GNUPLOT 1