Problem: project files have tool version in two places

Leading to extra work when copying between versions of VS.

Solution: remove second unnecessary definition.

builds/msvc/vs2010/local_thr/local_thr.vcxproj

@@ -56,10 +56,6 @@
       <Platform>x64</Platform>
     </ProjectConfiguration>
   </ItemGroup>
-  <PropertyGroup Label="Configuration">
-    <PlatformToolset>v100</PlatformToolset>
-    <ConfigurationType>Application</ConfigurationType>
-  </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="PropertySheets">

builds/msvc/vs2010/remote_lat/remote_lat.vcxproj

@@ -56,10 +56,6 @@
       <Platform>x64</Platform>
     </ProjectConfiguration>
   </ItemGroup>
-  <PropertyGroup Label="Configuration">
-    <PlatformToolset>v100</PlatformToolset>
-    <ConfigurationType>Application</ConfigurationType>
-  </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="PropertySheets">

builds/msvc/vs2012/local_thr/local_thr.vcxproj

@@ -56,10 +56,6 @@
       <Platform>x64</Platform>
     </ProjectConfiguration>
   </ItemGroup>
-  <PropertyGroup Label="Configuration">
-    <PlatformToolset>v110</PlatformToolset>
-    <ConfigurationType>Application</ConfigurationType>
-  </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="PropertySheets">

builds/msvc/vs2012/remote_lat/remote_lat.vcxproj

@@ -56,10 +56,6 @@
       <Platform>x64</Platform>
     </ProjectConfiguration>
   </ItemGroup>
-  <PropertyGroup Label="Configuration">
-    <PlatformToolset>v110</PlatformToolset>
-    <ConfigurationType>Application</ConfigurationType>
-  </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="PropertySheets">

builds/msvc/vs2013/local_thr/local_thr.vcxproj

@@ -56,10 +56,6 @@
       <Platform>x64</Platform>
     </ProjectConfiguration>
   </ItemGroup>
-  <PropertyGroup Label="Configuration">
-    <PlatformToolset>v120</PlatformToolset>
-    <ConfigurationType>Application</ConfigurationType>
-  </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="PropertySheets">

builds/msvc/vs2013/remote_lat/remote_lat.vcxproj

@@ -56,10 +56,6 @@
       <Platform>x64</Platform>
     </ProjectConfiguration>
   </ItemGroup>
-  <PropertyGroup Label="Configuration">
-    <PlatformToolset>v120</PlatformToolset>
-    <ConfigurationType>Application</ConfigurationType>
-  </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="PropertySheets">

builds/msvc/vs2015/local_thr/local_thr.vcxproj

@@ -56,10 +56,6 @@
       <Platform>x64</Platform>
     </ProjectConfiguration>
   </ItemGroup>
-  <PropertyGroup Label="Configuration">
-    <PlatformToolset>v120</PlatformToolset>
-    <ConfigurationType>Application</ConfigurationType>
-  </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="PropertySheets">

builds/msvc/vs2015/remote_lat/remote_lat.vcxproj

@@ -56,10 +56,6 @@
       <Platform>x64</Platform>
     </ProjectConfiguration>
   </ItemGroup>
-  <PropertyGroup Label="Configuration">
-    <PlatformToolset>v120</PlatformToolset>
-    <ConfigurationType>Application</ConfigurationType>
-  </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="PropertySheets">