Remove ISettingsChangedHandler.PREFERENCEACCESS_KEY (no longer required)

Change-Id: I49c091276f68888af16910df0b076f8bf7b99037
diff --git a/ecommons/org.eclipse.statet.ecommons.uimisc/src/org/eclipse/statet/ecommons/ui/ISettingsChangedHandler.java b/ecommons/org.eclipse.statet.ecommons.uimisc/src/org/eclipse/statet/ecommons/ui/ISettingsChangedHandler.java
index 154a59c..6583511 100644
--- a/ecommons/org.eclipse.statet.ecommons.uimisc/src/org/eclipse/statet/ecommons/ui/ISettingsChangedHandler.java
+++ b/ecommons/org.eclipse.statet.ecommons.uimisc/src/org/eclipse/statet/ecommons/ui/ISettingsChangedHandler.java
@@ -24,8 +24,6 @@
 public interface ISettingsChangedHandler {
 	
 	
-	public static final String PREFERENCEACCESS_KEY = "context.PrefAccess"; //$NON-NLS-1$
-	
 	public static final String VIEWER_KEY = "context.Viewer"; //$NON-NLS-1$