moving dev guide out

Author: aahill

articles/cognitive-services/language-service/concepts/developer-guide.md

@@ -14,8 +14,7 @@ items:
     href: https://aka.ms/unifiedLanguagePricing
   - name: Language Studio quickstart
     href: language-studio.md
-  - name: Samples and developer information
-    href: concepts/developer-guide.md
+  - name: Samples
     items:
     - name: C#
       href: https://github.com/Azure/azure-sdk-for-net/tree/master/sdk/textanalytics/Azure.AI.TextAnalytics/samples