Fix the build problem in libbitcoin_server

Author: Mr-Leshiy

build_msvc/libbitcoin_server/libbitcoin_server.vcxproj.in

@@ -154,12 +154,6 @@
     </Link>
   </ItemDefinitionGroup>
   <ItemGroup>
-    <ClCompile Include="..\..\src\rpc\net.cpp">
-      <ObjectFileName Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">$(IntDir)\netrpc.obj</ObjectFileName>
-      <ObjectFileName Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">$(IntDir)\netrpc.obj</ObjectFileName>
-      <ObjectFileName Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">$(IntDir)\netrpc.obj</ObjectFileName>
-      <ObjectFileName Condition="'$(Configuration)|$(Platform)'=='Release|x64'">$(IntDir)\netrpc.obj</ObjectFileName>
-    </ClCompile>
 @SOURCE_FILES@
   </ItemGroup>
   <ItemGroup>