SLING-8933 - The IncludeRuntimeExtension doesn't correctly normalise paths when using the path manipulation options

* removed unused import
diff --git a/src/main/java/org/apache/sling/scripting/sightly/impl/engine/extension/IncludeRuntimeExtension.java b/src/main/java/org/apache/sling/scripting/sightly/impl/engine/extension/IncludeRuntimeExtension.java
index 6bdc644..d98bff4 100644
--- a/src/main/java/org/apache/sling/scripting/sightly/impl/engine/extension/IncludeRuntimeExtension.java
+++ b/src/main/java/org/apache/sling/scripting/sightly/impl/engine/extension/IncludeRuntimeExtension.java
@@ -28,7 +28,6 @@
 import org.apache.commons.lang3.StringUtils;
 import org.apache.sling.api.SlingHttpServletRequest;
 import org.apache.sling.api.SlingHttpServletResponse;
-import org.apache.sling.api.resource.ResourceUtil;
 import org.apache.sling.api.scripting.SlingScriptHelper;
 import org.apache.sling.api.servlets.ServletResolver;
 import org.apache.sling.scripting.sightly.SightlyException;