message: remove now unnecessary sparsehash checks
diff: @@ -122,32 +122,8 @@ mark_as_advanced(FMT_FOUND)
  if (AXOM_ENABLE_SPARSEHASH)
  - include(CheckIncludeFileCXX)
  -
  - # Try to find the necessary include and namespace for hash functions
  - # This depends on the compiler and C++ standard library version
  -
  - set(_found_hash FALSE)
  -
  - set(_hdr <functional>)
  - set(_ns std)
  - set(_src "#include ${_hdr} \n int main() { int h = ${_ns}::hash<int>()(5)\; return 0\;}")
  - axom_check_code_compiles(SOURCE_STRING "${_src}" CODE_COMPILES _found_hash)
  -
  - if(NOT ${_found_hash})
  - set(_hdr <tr1/functional>)
  - set(_ns std::tr1)
  - set(_src "#include ${_hdr} \n int main() { int h = ${_ns}::hash<int>()(5)\; return 0\;}")
  - axom_check_code_compiles(SOURCE_STRING "${_src}" CODE_COMPILES _found_hash)
  -
  - endif()
  -
  - # Set up sparsehash, if we've found it
  - if(${_found_hash})
  - message(STATUS "Sparsehash configured with '${_hdr}' header")
  -
  - set(SPARSEHASH_HASHFUN_HEADER ${_hdr} CACHE INTERNAL "")
  - set(SPARSEHASH_HASHFUN_NAMESPACE ${_ns} CACHE INTERNAL "")
  + set(SPARSEHASH_HASHFUN_HEADER <functional> CACHE INTERNAL "")
  + set(SPARSEHASH_HASHFUN_NAMESPACE std CACHE INTERNAL "")
  set(SPARSEHASH_FOUND TRUE CACHE INTERNAL "")
  mark_as_advanced(
  @@ -203,10 +179,6 @@ if (AXOM_ENABLE_SPARSEHASH)
  DESTINATION include/axom)
  install(EXPORT axom-targets DESTINATION lib/cmake)
  -
  - else()
  - message(STATUS "Could not configure sparsehash")
  - endif()
  endif()
  #------------------------------------------------------------------------------
  