Use List.sort directly.

Rather than Collections.sort(List)

Change-Id: Ic21d788a78425749ded11159ac5dddd06735bc5b
Signed-off-by: Alexander Kurtakov <akurtako@redhat.com>

bundles/org.eclipse.core.tools/src/org/eclipse/core/tools/TreeContentProviderNode.java

diff --git a/bundles/org.eclipse.core.tools/src/org/eclipse/core/tools/TreeContentProviderNode.java b/bundles/org.eclipse.core.tools/src/org/eclipse/core/tools/TreeContentProviderNode.java
index ea7f5da..0e0113e 100644
--- a/bundles/org.eclipse.core.tools/src/org/eclipse/core/tools/TreeContentProviderNode.java
+++ b/bundles/org.eclipse.core.tools/src/org/eclipse/core/tools/TreeContentProviderNode.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2002, 2006 IBM Corporation and others.
+ * Copyright (c) 2002, 2020 IBM Corporation and others.
  *
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
@@ -153,7 +153,7 @@
 	public void sort() {
 		if (children == null)
 			return;
-		Collections.sort(children);
+		children.sort(null);
 	}
 
 	/**