fix: AWS Endpoint Generation (#5268)

#### Summary

ECR public API has been added to the endpoint list... we no longer need to hard code it.

Fixes #5250

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Explain what problem this PR addresses
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plugins/source/aws/client/data/partition_service_region.json

@@ -2820,8 +2820,6 @@
             "ap-southeast-1": {},
             "ap-southeast-2": {},
             "ca-central-1": {},
-            "dataplane-ap-south-1": {},
-            "dataplane-us-east-2": {},
             "eu-central-1": {},
             "eu-west-1": {},
             "eu-west-2": {},
@@ -4959,6 +4957,11 @@
             "us-west-2": {}
           }
         },
+        "sagemaker-geospatial": {
+          "regions": {
+            "us-west-2": {}
+          }
+        },
         "savingsplans": {
           "regions": {
             "aws-global": {}
@@ -6499,8 +6502,7 @@
         },
         "greengrass": {
           "regions": {
-            "cn-north-1": {},
-            "dataplane-cn-north-1": {}
+            "cn-north-1": {}
           }
         },
         "guardduty": {

plugins/source/aws/tools/endpoints/main.go

@@ -90,16 +90,6 @@ func partitionRegionServiceGenerator() error {
 		return err
 	}
 
-	if _, ok := data.Partitions["aws"].Services["api.ecr-public"]; ok {
-		panic("api.ecr-public has been added to the list and code should be updated")
-	}
-	data.Partitions["aws"].Services["api.ecr-public"] = &client.AwsService{
-		Regions: map[string]*map[string]interface{}{
-			"us-east-1": {},
-			"us-west-2": {},
-		},
-	}
-
 	err = saveToJsonFile(data, filepath.Join("client", client.PartitionServiceRegionFile))
 	return err
 }