Remove Mono.Cecil references

Closes #29030

build/config/SignToolData.json

@@ -191,10 +191,6 @@
     "Microsoft.VisualStudio.Threading.resources.dll",
     "Microsoft.VisualStudio.Validation.dll",
     "Microsoft.Win32.Primitives.dll",
-    "Mono.Cecil.dll",
-    "Mono.Cecil.Mdb.dll",
-    "Mono.Cecil.Pdb.dll",
-    "Mono.Cecil.Rocks.dll",
     "Nerdbank.FullDuplexStream.dll",
     "Newtonsoft.Json.dll",
     "NuGet.CommandLine.2.8.5.nupkg",

src/Setup/DevDivInsertionFiles/BuildDevDivInsertionFiles.vb

-Imports System.IO.Packaging
+Imports System.IO.Packaging
 Imports System.IO
 Imports System.Threading
 Imports Newtonsoft.Json
@@ -574,10 +574,6 @@ Public Class BuildDevDivInsertionFiles
         add("Vsix\Roslyn.VisualStudio.Setup\System.Composition.Hosting.dll")
         add("Vsix\Roslyn.VisualStudio.Setup\System.Composition.TypedParts.dll")
         add("Vsix\Roslyn.VisualStudio.Setup\System.Threading.Tasks.Extensions.dll")
-        add("Vsix\Roslyn.VisualStudio.Setup\Mono.Cecil.dll")
-        add("Vsix\Roslyn.VisualStudio.Setup\Mono.Cecil.Mdb.dll")
-        add("Vsix\Roslyn.VisualStudio.Setup\Mono.Cecil.Pdb.dll")
-        add("Vsix\Roslyn.VisualStudio.Setup\Mono.Cecil.Rocks.dll")
         add("Vsix\Roslyn.VisualStudio.Setup\ICSharpCode.Decompiler.dll")
         add("Dlls\Microsoft.CodeAnalysis.VisualBasic.ExpressionCompiler\Microsoft.CodeAnalysis.VisualBasic.ExpressionEvaluator.ExpressionCompiler.vsdconfig")
         add("Dlls\Microsoft.CodeAnalysis.VisualBasic.ResultProvider\Microsoft.CodeAnalysis.VisualBasic.ExpressionEvaluator.ResultProvider.vsdconfig")
@@ -945,4 +941,4 @@ set DEVPATH=%RoslynToolsRoot%;%DEVPATH%"
             Console.WriteLine(s)
         End If
     End Sub
-End Class
\ No newline at end of file
+End Class

src/VisualStudio/Setup/AssemblyRedirects.cs

@@ -44,7 +44,6 @@
 [assembly: ProvideCodeBase(CodeBase = @"$PackageFolder$\System.Threading.Tasks.Extensions.dll")]
 [assembly: ProvideCodeBase(CodeBase = @"$PackageFolder$\Humanizer.dll")]
 
-[assembly: ProvideCodeBase(CodeBase = @"$PackageFolder$\Mono.Cecil.dll")]
 [assembly: ProvideCodeBase(CodeBase = @"$PackageFolder$\ICSharpCode.Decompiler.dll")]
 
 [assembly: ProvideBindingRedirection(

src/VisualStudio/Setup/Roslyn.VisualStudio.Setup.csproj

@@ -237,7 +237,6 @@
     <NuGetPackageToIncludeInVsix Include="System.Composition.Hosting" />
     <NuGetPackageToIncludeInVsix Include="System.Threading.Tasks.Extensions" />
     <NuGetPackageToIncludeInVsix Include="ICSharpCode.Decompiler" />
-    <NuGetPackageToIncludeInVsix Include="Mono.Cecil" />
   </ItemGroup>
   <ItemGroup>
     <VSIXSourceItem Include="$(NuGetPackageRoot)\SQLitePCLRaw.bundle_green\1.1.2\lib\net45\SQLitePCLRaw.batteries_green.dll" />