Revert "aws_eip: 'findIPAMPoolAllocationsForEIP' is redundant."

This reverts commit 05a5e23.

Author: ewbankkit

internal/service/ec2/ec2_eip.go

@@ -16,10 +16,12 @@ import (
 	awstypes "github.com/aws/aws-sdk-go-v2/service/ec2/types"
 	"github.com/hashicorp/aws-sdk-go-base/v2/tfawserr"
 	"github.com/hashicorp/terraform-plugin-sdk/v2/diag"
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/retry"
 	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
 	"github.com/hashicorp/terraform-provider-aws/internal/conns"
 	"github.com/hashicorp/terraform-provider-aws/internal/enum"
 	"github.com/hashicorp/terraform-provider-aws/internal/errs/sdkdiag"
+	tfslices "github.com/hashicorp/terraform-provider-aws/internal/slices"
 	tftags "github.com/hashicorp/terraform-provider-aws/internal/tags"
 	"github.com/hashicorp/terraform-provider-aws/internal/tfresource"
 	"github.com/hashicorp/terraform-provider-aws/names"
@@ -337,7 +339,7 @@ func resourceEIPDelete(ctx context.Context, d *schema.ResourceData, meta any) di
 			timeout = 10 * time.Minute // IPAM eventual consistency
 		)
 		_, err := tfresource.RetryUntilNotFound(ctx, timeout, func(ctx context.Context) (any, error) {
-			return findIPAMPoolAllocationsByIPAMPoolIDAndResourceID(ctx, conn, ipamPoolID, d.Get("allocation_id").(string))
+			return findIPAMPoolAllocationsForEIP(ctx, conn, ipamPoolID, d.Get("allocation_id").(string))
 		})
 
 		if err != nil {
@@ -428,3 +430,25 @@ func disassociateEIP(ctx context.Context, conn *ec2.Client, associationID string
 func eipARN(ctx context.Context, c *conns.AWSClient, allocationID string) string {
 	return c.RegionalARN(ctx, names.EC2, "elastic-ip/"+allocationID)
 }
+
+func findIPAMPoolAllocationsForEIP(ctx context.Context, conn *ec2.Client, ipamPoolID, eipAllocationID string) ([]awstypes.IpamPoolAllocation, error) {
+	input := ec2.GetIpamPoolAllocationsInput{
+		IpamPoolId: aws.String(ipamPoolID),
+	}
+
+	output, err := findIPAMPoolAllocations(ctx, conn, &input)
+
+	if err != nil {
+		return nil, err
+	}
+
+	output = tfslices.Filter(output, func(v awstypes.IpamPoolAllocation) bool {
+		return v.ResourceType == awstypes.IpamPoolAllocationResourceTypeEip && aws.ToString(v.ResourceId) == eipAllocationID
+	})
+
+	if len(output) == 0 {
+		return nil, &retry.NotFoundError{}
+	}
+
+	return output, nil
+}