Remove unused method in UriComponentsBuilder

This commit removes HierarchicalUriComponents#checkSchemeAndHost
unused private method.

Closes gh-33684

spring-web/src/main/java/org/springframework/web/util/UriComponentsBuilder.java

@@ -243,15 +243,6 @@ public static UriComponentsBuilder fromHttpUrl(String httpUrl) throws InvalidUrl
  return fromUriString(httpUrl);
  }
 
- private static void checkSchemeAndHost(String uri, @Nullable String scheme, @Nullable String host) {
- if (StringUtils.hasLength(scheme) && scheme.startsWith("http") && !StringUtils.hasLength(host)) {
- throw new IllegalArgumentException("[" + uri + "] is not a valid HTTP URL");
- }
- if (StringUtils.hasLength(host) && host.startsWith("[") && !host.endsWith("]")) {
- throw new IllegalArgumentException("Invalid IPV6 host in [" + uri + "]");
- }
- }
-
  /**
  * Create a new {@code UriComponents} object from the URI associated with
  * the given HttpRequest while also overlaying with values from the headers