CodeGen from PR 13885 in Azure/azure-rest-api-specs

Remove all schema readme (#13885)

* Remove all schema readme

* process new rp

* Remove after_scripts

Author: SDKAuto

schemas/2018-06-01/Microsoft.DataFactory.json

@@ -10820,7 +10820,8 @@
               "type": "string",
               "enum": [
                 "IntegrationRuntimeReference",
-                "LinkedServiceReference"
+                "LinkedServiceReference",
+                "CredentialReference"
               ]
             },
             {
@@ -10943,15 +10944,19 @@
           "properties": {},
           "description": "The partial data of one sheet. Type: string (or Expression with resultType string)."
         },
+        "sheetIndex": {
+          "type": "object",
+          "properties": {},
+          "description": "The sheet index of excel file and default value is 0. Type: integer (or Expression with resultType integer)"
+        },
         "sheetName": {
           "type": "object",
           "properties": {},
-          "description": "The sheet of excel file. Type: string (or Expression with resultType string)."
+          "description": "The sheet name of excel file. Type: string (or Expression with resultType string)."
         }
       },
       "required": [
-        "location",
-        "sheetName"
+        "location"
       ],
       "description": "Excel dataset properties."
     },
@@ -16328,6 +16333,17 @@
           ],
           "description": "License type for bringing your own license scenario."
         },
+        "managedCredential": {
+          "oneOf": [
+            {
+              "$ref": "#/definitions/EntityReference"
+            },
+            {
+              "$ref": "https://schema.management.azure.com/schemas/common/definitions.json#/definitions/expression"
+            }
+          ],
+          "description": "The entity reference."
+        },
         "packageStores": {
           "oneOf": [
             {