Remove redundant source files in project libthrift.vcxproj (#1614)

delete redundant configuration of three files
diff --git a/lib/cpp/libthrift.vcxproj b/lib/cpp/libthrift.vcxproj
index 307b121..d1097ec 100644
--- a/lib/cpp/libthrift.vcxproj
+++ b/lib/cpp/libthrift.vcxproj
@@ -53,12 +53,9 @@
     <ClCompile Include="src\thrift\server\TSimpleServer.cpp"/>
     <ClCompile Include="src\thrift\server\TThreadPoolServer.cpp"/>
     <ClCompile Include="src\thrift\server\TThreadedServer.cpp"/>
-	<ClCompile Include="src\thrift\server\TConnectedClient.cpp"/>
-	<ClCompile Include="src\thrift\server\TNonblockingServer.cpp"/>
-	<ClCompile Include="src\thrift\server\TServerFramework.cpp"/>
-	<ClCompile Include="src\thrift\server\TSimpleServer.cpp"/>
-	<ClCompile Include="src\thrift\server\TThreadedServer.cpp"/>
-	<ClCompile Include="src\thrift\server\TThreadPoolServer.cpp"/>
+    <ClCompile Include="src\thrift\server\TConnectedClient.cpp"/>
+    <ClCompile Include="src\thrift\server\TNonblockingServer.cpp"/>
+    <ClCompile Include="src\thrift\server\TServerFramework.cpp"/>
     <ClCompile Include="src\thrift\TApplicationException.cpp"/>
     <ClCompile Include="src\thrift\TOutput.cpp"/>
     <ClCompile Include="src\thrift\transport\TBufferTransports.cpp"/>