remove old network api-versions for Go (#18338)

* remove old network api-versions for Go

* restore one and remove more

Author: ArcturusZhang

specification/network/resource-manager/readme.go.md

@@ -51,16 +51,7 @@ batch:
   - tag: package-2018-01
   - tag: package-2017-11
   - tag: package-2017-10
-  - tag: package-2017-09
-  - tag: package-2017-08
-  - tag: package-2017-06
-  - tag: package-2017-03
-  - tag: package-2016-12
-  - tag: package-2016-09
-  - tag: package-2016-06
-  - tag: package-2016-03
   - tag: package-2015-06split
-  - tag: package-2015-05-preview
 ```
 
 ### Tag: package-2021-05 and go