[dogfooding][cleanup] Use static inner class clean up for
tools.resources
code

Using this cleanup brings:
- It reviews the feature
 - For optimization: small memory usage reduction as the outer pointer
is removed

Change-Id: I3a6f3188ddd339ddba7bb1a0a7d2964bdf41aafd
Signed-off-by: Lars Vogel <Lars.Vogel@vogella.com>
diff --git a/bundles/org.eclipse.core.tools.resources/src/org/eclipse/core/tools/resources/ResourceChangeView.java b/bundles/org.eclipse.core.tools.resources/src/org/eclipse/core/tools/resources/ResourceChangeView.java
index 2cf0410..dd71ab6 100644
--- a/bundles/org.eclipse.core.tools.resources/src/org/eclipse/core/tools/resources/ResourceChangeView.java
+++ b/bundles/org.eclipse.core.tools.resources/src/org/eclipse/core/tools/resources/ResourceChangeView.java
@@ -149,7 +149,7 @@
 		}
 	}
 
-	class ResourceEventNode extends DeltaNode {
+	static class ResourceEventNode extends DeltaNode {
 		private int eventType;
 
 		public ResourceEventNode(IResourceChangeEvent event) {