remove duplicated script (Azure#48743)

Author: live1206

eng/scripts/typespec/Check-CodeGeneration.ps1

@@ -3,12 +3,20 @@
 $ErrorActionPreference = 'Stop'
 Set-StrictMode -Version 3.0
 
-& "$PSScriptRoot/Generate-Code.ps1"
+$packageRoot = Resolve-Path "$PSScriptRoot../../../packages/http-client-csharp"
+Push-Location $packageRoot
 
-Write-Host 'Checking generated files difference...'
-git -c core.safecrlf=false diff --ignore-space-at-eol --exit-code
-if ($LastExitCode -ne 0) {
-    Write-Error 'Generated codes are not up to date. Please run: eng/scripts/typespec/Generate-Code.ps1'
-    exit 1
+try {
+    & "$packageRoot/eng/scripts/Generate.ps1"
+
+    Write-Host 'Checking generated files difference...'
+    git -c core.safecrlf=false diff --ignore-space-at-eol --exit-code
+    if ($LastExitCode -ne 0) {
+        Write-Error 'Generated codes are not up to date. Please run: eng/packages/http-client-csharp/eng/scripts/Generate.ps1'
+        exit 1
+    }
+    Write-Host 'Done. No change is detected.'
+}
+finally {
+    Pop-Location
 }
-Write-Host 'Done. No change is detected.'