Revert "COMP: hide deprecated warnings on dashboard"

This reverts commit f72c58b7.

CMake/OTBSetStandardCompilerFlags.cmake

@@ -313,16 +313,3 @@ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CXX_WARNING_FLAGS}")
 #-----------------------------------------------------------------------------
 #Check the set of platform flags the compiler supports
 check_compiler_platform_flags()
-
-
-# dashboard build
-if(NOT "$ENV{DASHBOARD_TEST_FROM_CTEST}" STREQUAL "")
-  if(UNIX)
-    if(CMAKE_COMPILER_IS_GNUCXX)
-      set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-cpp")
-    else()
-      set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-#warnings")
-    endif() #CMAKE_COMPILER_IS_GNUCXX
-  endif() #UNIX
-
-endif()