Fix project file.

Author: yfakariya

src/MsgPack.Unity3D.Full/MsgPack.Unity3D.Full.csproj

@@ -660,9 +660,6 @@
     <Compile Include="Serialization\TypedMessagePackSerializerWrapper`1.cs" />
   </ItemGroup>
   <ItemGroup>
-    <None Include="..\MsgPack\remarks.xml">
-      <Link>remarks.xml</Link>
-    </None>
     <None Include="CorLibOnlyHelper.tt">
       <Generator>TextTemplatingFileGenerator</Generator>
       <LastGenOutput>CorLibOnlyHelper.cs</LastGenOutput>

src/MsgPack.Unity3D/MsgPack.Unity3D.csproj

@@ -666,11 +666,6 @@
     </Compile>
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>
-  <ItemGroup>
-    <None Include="..\MsgPack\remarks.xml">
-      <Link>remarks.xml</Link>
-    </None>
-  </ItemGroup>
   <ItemGroup>
     <Service Include="{508349B6-6B84-4DF5-91F0-309BEEBAD82D}" />
   </ItemGroup>