Delete custom upgrader

This leaves 'gvfs upgrade' non-functional

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>

Author: derrickstolee

GVFS.sln

@@ -39,8 +39,6 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "GVFS.Tests", "GVFS\GVFS.Tes
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "GVFS.UnitTests", "GVFS\GVFS.UnitTests\GVFS.UnitTests.csproj", "{1A46C414-7F39-4EF0-B216-A88033D18678}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "GVFS.Upgrader", "GVFS\GVFS.Upgrader\GVFS.Upgrader.csproj", "{F8D96536-0F2C-4B40-8516-D2C0516C66EC}"
-EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "GVFS.VirtualFileSystemHook", "GVFS\GVFS.VirtualFileSystemHook\GVFS.VirtualFileSystemHook.vcxproj", "{2D23AB54-541F-4ABC-8DCA-08C199E97ABB}"
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "GVFS.Virtualization", "GVFS\GVFS.Virtualization\GVFS.Virtualization.csproj", "{EC90AF5D-E018-4248-85D6-9DB1898D710E}"
@@ -129,10 +127,6 @@ Global
 		{1A46C414-7F39-4EF0-B216-A88033D18678}.Debug|x64.Build.0 = Debug|Any CPU
 		{1A46C414-7F39-4EF0-B216-A88033D18678}.Release|x64.ActiveCfg = Release|Any CPU
 		{1A46C414-7F39-4EF0-B216-A88033D18678}.Release|x64.Build.0 = Release|Any CPU
-		{F8D96536-0F2C-4B40-8516-D2C0516C66EC}.Debug|x64.ActiveCfg = Debug|Any CPU
-		{F8D96536-0F2C-4B40-8516-D2C0516C66EC}.Debug|x64.Build.0 = Debug|Any CPU
-		{F8D96536-0F2C-4B40-8516-D2C0516C66EC}.Release|x64.ActiveCfg = Release|Any CPU
-		{F8D96536-0F2C-4B40-8516-D2C0516C66EC}.Release|x64.Build.0 = Release|Any CPU
 		{2D23AB54-541F-4ABC-8DCA-08C199E97ABB}.Debug|x64.ActiveCfg = Debug|x64
 		{2D23AB54-541F-4ABC-8DCA-08C199E97ABB}.Debug|x64.Build.0 = Debug|x64
 		{2D23AB54-541F-4ABC-8DCA-08C199E97ABB}.Release|x64.ActiveCfg = Release|x64

GVFS/GVFS.Common/GVFSPlatform.cs

@@ -78,28 +78,8 @@ public static void Register(GVFSPlatform platform)
         public abstract bool IsElevated();
         public abstract string GetCurrentUser();
         public abstract string GetUserIdFromLoginSessionId(int sessionId, ITracer tracer);
-
-        /// <summary>
-        /// Get the directory for upgrades that is permissioned to
-        /// require elevated privileges to modify. This can be used for
-        /// data that we don't want normal user accounts to modify.
-        /// </summary>
-        public abstract string GetUpgradeProtectedDataDirectory();
-
-        /// <summary>
-        /// Directory that upgrader log directory should be placed
-        /// in. There can be multiple log directories, so this is the
-        /// containing directory to place them in.
-        /// </summary>
-        public abstract string GetUpgradeLogDirectoryParentDirectory();
         public abstract string GetSystemInstallerLogPath();
 
-        /// <summary>
-        /// Directory that contains the file indicating that a new
-        /// version is available.
-        /// </summary>
-        public abstract string GetUpgradeHighestAvailableVersionDirectory();
-
         public abstract void ConfigureVisualStudio(string gitBinPath, ITracer tracer);
 
         public abstract bool TryCopyPanicLogs(string copyToDir, out string error);
@@ -125,10 +105,6 @@ public abstract FileBasedLock CreateFileBasedLock(
             ITracer tracer,
             string lockPath);
 
-        public abstract ProductUpgraderPlatformStrategy CreateProductUpgraderPlatformInteractions(
-            PhysicalFileSystem fileSystem,
-            ITracer tracer);
-
         public bool TryGetNormalizedPathRoot(string path, out string pathRoot, out string errorMessage)
         {
             pathRoot = null;
@@ -229,11 +205,6 @@ public string MountExecutableName
             {
                 get { return "GVFS.Mount" + this.ExecutableExtension; }
             }
-
-            public string GVFSUpgraderExecutableName
-            {
-                get { return "GVFS.Upgrader" + this.ExecutableExtension; }
-            }
         }
 
         public class UnderConstructionFlags