Revert "Task 9639284: Swagger changes for new UK agreement templates (#13895)" (#13946)

This reverts commit ea5bc27.

Author: us6193

specification/billing/resource-manager/Microsoft.Billing/preview/2019-10-01-preview/billing.json

@@ -8700,12 +8700,9 @@
           "description": "The category of the agreement signed by a customer.",
           "readOnly": true,
           "enum": [
-            "AffiliatePurchaseTerms",
-            "IndirectForGovernmentAgreement",
             "MicrosoftCustomerAgreement",
-            "MicrosoftPartnerAgreement",
-            "Other",
-            "UKCloudComputeFramework"
+            "AffiliatePurchaseTerms",
+            "Other"
           ],
           "x-ms-enum": {
             "name": "category",

specification/billing/resource-manager/Microsoft.Billing/stable/2020-05-01/billing.json

@@ -6372,12 +6372,9 @@
           "description": "The category of the agreement signed by a customer.",
           "readOnly": true,
           "enum": [
-            "AffiliatePurchaseTerms",
-            "IndirectForGovernmentAgreement",
             "MicrosoftCustomerAgreement",
-            "MicrosoftPartnerAgreement",
-            "Other",
-            "UKCloudComputeFramework"
+            "AffiliatePurchaseTerms",
+            "Other"
           ],
           "x-ms-enum": {
             "name": "category",