diff --git a/internal/sdk/http_sender.go b/internal/sdk/http_sender.go
index df562ec..e86b567 100644
--- a/internal/sdk/http_sender.go
+++ b/internal/sdk/http_sender.go
@@ -2,7 +2,6 @@ package sdk
 
 import (
 	"io"
-	"maps"
 	"net/http"
 
 	"github.com/smartystreets/smartystreets-go-sdk"
@@ -54,11 +53,3 @@ func interpret(response *http.Response, content []byte) ([]byte, error) {
 	}
 	return nil, sdk.NewHTTPStatusError(response.StatusCode, content)
 }
-
-func interpretAndReturnHeaders(response *http.Response, content []byte, headers http.Header) ([]byte, http.Header, error) {
-	if response.StatusCode == http.StatusOK {
-		maps.Copy(headers, response.Header)
-		return content, headers, nil
-	}
-	return nil, nil, sdk.NewHTTPStatusError(response.StatusCode, content)
-}