Update endpoints model

Author: AWS SDK for Go v2 automation user

codegen/smithy-aws-go-codegen/src/main/resources/software/amazon/smithy/aws/go/codegen/endpoints.json

@@ -22712,18 +22712,6 @@
           }
         }
       },
-      "savingsplans" : {
-        "endpoints" : {
-          "aws-us-gov-global" : {
-            "credentialScope" : {
-              "region" : "us-gov-west-1"
-            },
-            "hostname" : "savingsplans.amazonaws.com"
-          }
-        },
-        "isRegionalized" : false,
-        "partitionEndpoint" : "aws-us-gov-global"
-      },
       "secretsmanager" : {
         "endpoints" : {
           "us-gov-east-1" : {