Move boost config into source except WITH_ICU for *nix.

Author: evoskuil

builds/msvc/vs2022/libbitcoin-system.import.props

@@ -46,12 +46,9 @@
   <ItemDefinitionGroup>
     <ClCompile>
       <AdditionalIncludeDirectories>$(ProjectDir)..\..\..\..\..\libbitcoin-system\include\;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <!-- WITH_ICU always defined in Visual Studio builds. -->
       <!-- NOMINMAX enables use of std::min/max without conflict. -->
       <!-- WIN32_LEAN_AND_MEAN avoids inclusion of certain headers, winsock.h conflicts with boost and protocol use of winsock2.h. -->
-      <PreprocessorDefinitions>WITH_ICU;WIN32_LEAN_AND_MEAN;NOMINMAX;_WIN32_WINNT=0x0602;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <!-- Disable auto-linking for all boost-json and its dependency boost-container so they can be header only. -->
-      <PreprocessorDefinitions>BOOST_JSON_NO_LIB;BOOST_CONTAINER_NO_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>WIN32_LEAN_AND_MEAN;NOMINMAX;_WIN32_WINNT=0x0602;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <PreprocessorDefinitions Condition="'$(Linkage-libbitcoin-system)' == 'static' Or '$(Linkage-libbitcoin-system)' == 'ltcg'">BC_STATIC;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <PreprocessorDefinitions Condition="$(Configuration.IndexOf('Debug')) != -1">_CRTDBG_MAP_ALLOC;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <!-- Enable use of CPU intrinsics. -->