remove TagValue (#9830)

Author: kasobol-msft

specification/storage/data-plane/Microsoft.BlobStorage/preview/2019-12-12/blob.json

@@ -10249,18 +10249,14 @@
       "type": "object",
       "required": [
         "Name",
-        "ContainerName",
-        "TagValue"
+        "ContainerName"
       ],
       "properties": {
         "Name": {
           "type": "string"
         },
         "ContainerName": {
           "type": "string"
-        },
-        "TagValue": {
-          "type": "string"
         }
       }
     },