removing $result from wrapper string (#13451)

* removing $result from wrapper

* test fixes

provisioner/powershell/provisioner.go

@@ -58,8 +58,6 @@ const wrapPowershellString string = `
 	if ($LASTEXITCODE -ne $null -and $LASTEXITCODE -ne 0) {
 		$exitCode = $LASTEXITCODE
 	}
-	
-	Write-Host $result
 	exit $exitCode
 
 `

provisioner/powershell/provisioner_test.go

@@ -36,7 +36,7 @@ func TestProvisionerPrepare_extractScript(t *testing.T) {
 
 	// File contents should contain 2 lines concatenated by newlines: foo\nbar
 	readFile, err := os.ReadFile(file)
-	expectedContents := " \n\tif (Test-Path variable:global:ProgressPreference) {\n\t  set-variable -name variable:global:ProgressPreference -value 'SilentlyContinue'\n\t}\n\t\n\t$exitCode = 0\n\ttry {\n\t$env:PACKER_BUILDER_TYPE=\"\"; $env:PACKER_BUILD_NAME=\"\"; \n\tfoo\n\tbar\n\t\n\t$exitCode = 0\n\t} catch {\n\tWrite-Error \"An error occurred: $_\"\n\t$exitCode = 1\n\t}\n\t\n\tif ($LASTEXITCODE -ne $null -and $LASTEXITCODE -ne 0) {\n\t\t$exitCode = $LASTEXITCODE\n\t}\n\t\n\tWrite-Host $result\n\texit $exitCode\n\n"
+	expectedContents := "if (Test-Path variable:global:ProgressPreference) {\n         set-variable -name variable:global:ProgressPreference -value 'SilentlyContinue'\n         }\n         \n         $exitCode = 0\n         try {\n         $env:PACKER_BUILDER_TYPE=\"\"; $env:PACKER_BUILD_NAME=\"\"; \n         foo\n         bar\n         \n         $exitCode = 0\n         } catch {\n         Write-Error \"An error occurred: $_\"\n         $exitCode = 1\n         }\n         \n         if ($LASTEXITCODE -ne $null -and $LASTEXITCODE -ne 0) {\n         $exitCode = $LASTEXITCODE\n         }\n         exit $exitCode"
 	normalizedExpectedContent := normalizeWhiteSpace(expectedContents)
 	if err != nil {
 		t.Fatalf("Should not be error: %s", err)