Do not warn against Root Servlet context location

Closes gh-36692

Author: bclozel

spring-webflux/src/main/java/org/springframework/web/reactive/resource/ResourceHandlerUtils.java

@@ -76,10 +76,6 @@ else if (location instanceof ClassPathResource classPathResource) {
 			}
 			else if (location instanceof ContextResource contextResource) {
 				path = contextResource.getPathWithinContext();
-				if ("/".equals(path)) {
-					logger.warn("Resource location '" + location + "' is considered unsafe " +
-							"and should not be used as it provides access to the root servlet context.");
-				}
 			}
 			else if (location instanceof UrlResource) {
 				path = location.getURL().toExternalForm();

spring-webmvc/src/main/java/org/springframework/web/servlet/resource/ResourceHandlerUtils.java

@@ -77,10 +77,6 @@ else if (location instanceof ClassPathResource classPathResource) {
 			}
 			else if (location instanceof ContextResource contextResource) {
 				path = contextResource.getPathWithinContext();
-				if ("/".equals(path)) {
-					logger.warn("Resource location '" + location + "' is considered unsafe " +
-							"and should not be used as it provides access to the root servlet context.");
-				}
 			}
 			else if (location instanceof UrlResource) {
 				path = location.getURL().toExternalForm();