Update version to 7.6.1 and do some clean up

Author: xuzhg

src/Microsoft.AspNet.OData/Microsoft.AspNet.OData.csproj

@@ -42,11 +42,6 @@
       <HintPath>..\..\sln\packages\Microsoft.Spatial.7.12.2\lib\net45\Microsoft.Spatial.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="Newtonsoft.Json, Version=13.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL"/>
-	  <Reference Include="Microsoft.Spatial, Version=7.11.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
-		  <HintPath>..\..\sln\packages\Microsoft.Spatial.7.11.1\lib\net45\Microsoft.Spatial.dll</HintPath>
-		    <Private>True</Private>
-	  </Reference>
     <Reference Include="Newtonsoft.Json, Version=13.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
       <HintPath>..\..\sln\packages\Newtonsoft.Json.13.0.1\lib\net45\Newtonsoft.Json.dll</HintPath>
       <Private>True</Private>

tools/WebStack.versions.settings.targets

@@ -5,7 +5,7 @@
   <PropertyGroup>
     <VersionMajor Condition="'$(VersionMajor)' == ''">7</VersionMajor>
     <VersionMinor Condition="'$(VersionMinor)' == ''">6</VersionMinor>
-    <VersionBuild Condition="'$(VersionBuild)' == ''">0</VersionBuild>
+    <VersionBuild Condition="'$(VersionBuild)' == ''">1</VersionBuild>
     <VersionRelease Condition="'$(VersionRelease)' == ''"></VersionRelease>
   </PropertyGroup>