CTestTestMemcheck: do not search for compilers

Tests/CTestTestMemcheck/CMakeLists.txt.in

@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 2.8.9)
-project(CTestTestMemcheck@SUBTEST_NAME@)
+project(CTestTestMemcheck@SUBTEST_NAME@ NONE)
 include(CTest)
 
 add_test(NAME RunCMake COMMAND "${CMAKE_COMMAND}" --version)