Remove migration tool from module package, keep CI tests

The migration script lives in the repo as a standalone tool but is
not included in the packaged module. The CI job uses dependsOn: []
so it runs directly from the checked-out source without waiting for
the module build.

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Author: adityapatwardhan

.ci/ci.yml

@@ -152,6 +152,7 @@ stages:
 
   - job: TestMigrationTool
     displayName: Migration Tool Tests
+    dependsOn: []
     pool:
       vmImage: windows-latest
     steps:

doBuild.ps1

@@ -53,13 +53,6 @@ function DoBuild
     Write-Verbose -Verbose -Message "Copying resource manifests to '$BuildOutPath'"
     Copy-Item -Path "${SrcPath}/dsc/*.resource.json" -Dest "$BuildOutPath" -Force
 
-    # Copy migration tool
-    $migrationToolOutPath = Join-Path -Path $BuildOutPath -ChildPath "migration"
-    Write-Verbose -Verbose -Message "Creating migration tool output path: '$migrationToolOutPath'"
-    $null = New-Item -ItemType Directory -Path $migrationToolOutPath -Force
-    Write-Verbose -Verbose -Message "Copying ConvertTo-PSResourceGet.ps1 to '$migrationToolOutPath'"
-    Copy-Item -Path "tool/migration/ConvertTo-PSResourceGet.ps1" -Dest "$migrationToolOutPath" -Force
-
     # Build and place binaries
     if ( Test-Path "${SrcPath}/code" ) {
         Write-Verbose -Verbose -Message "Building assembly and copying to '$BuildOutPath'"