Remove Mark_AS_ADVANCED for some variables that do not exist

Templates/CCMakeSystemConfig.cmake.in

@@ -14,6 +14,7 @@ SET (CMAKE_USE_PTHREADS       @CMAKE_USE_PTHREADS@ CACHE BOOL
 IF(WIN32)
   SET (CMAKE_USE_WIN32_THREADS  @CMAKE_USE_WIN32_THREADS@ CACHE BOOL
        "Use the win32 thread library.")
+  MARK_AS_ADVANCED(CMAKE_USE_WIN32_THREADS)
 ENDIF(WIN32)
 
 SET (CMAKE_HP_PTHREADS        @CMAKE_HP_PTHREADS@ CACHE BOOL
@@ -125,12 +126,8 @@ MARK_AS_ADVANCED(
 CMAKE_C_SHLIB_LINK_FLAGS
 CMAKE_C_SHLIB_RUNTIME_FLAG
 CMAKE_X_LIBS
-CMAKE_USE_WIN32_THREADS
 CMAKE_USE_SPROC
 CMAKE_USE_PTHREADS
-CMAKE_OBJECT_FILE_SUFFIX
-CMAKE_EXECUTABLE_SUFFIX
-CMAKE_STATICLIB_SUFFIX
 CMAKE_SHLIB_SUFFIX
 CMAKE_MODULE_SUFFIX
 CMAKE_C_COMPILER