Remove obsolete hashCode/equals for Region

This commit removes the obsolete equals and hashCode methods for Region.
For the upcoming changes for win32 the current implementation cannot
be used anymore because all handles will be created on demand. As the
current implementation is equal in their behavior to the base behavior
for these methods inherited from Object they will be removed.

Author: akoch-yatta

bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/graphics/Region.java

@@ -424,23 +424,6 @@ void destroy() {
 	handle = 0;
 }
 
-/**
- * Compares the argument to the receiver, and returns true
- * if they represent the <em>same</em> object using a class
- * specific comparison.
- *
- * @param object the object to compare with this object
- * @return <code>true</code> if the object is the same as this object and <code>false</code> otherwise
- *
- * @see #hashCode
- */
-@Override
-public boolean equals(Object object) {
-	if (this == object) return true;
-	if (!(object instanceof Region region)) return false;
-	return handle == region.handle;
-}
-
 /**
  * Returns a rectangle which represents the rectangular
  * union of the collection of polygons the receiver
@@ -499,21 +482,6 @@ long regionToRects(long message, long rgn, long r, long path) {
 	return 0;
 }
 
-/**
- * Returns an integer hash code for the receiver. Any two
- * objects that return <code>true</code> when passed to
- * <code>equals</code> must return the same value for this
- * method.
- *
- * @return the receiver's hash
- *
- * @see #equals
- */
-@Override
-public int hashCode() {
-	return (int)handle;
-}
-
 /**
  * Intersects the given rectangle to the collection of polygons
  * the receiver maintains to describe its area.

bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/graphics/Region.java

@@ -298,24 +298,6 @@ void destroy() {
 	handle = 0;
 }
 
-/**
- * Compares the argument to the receiver, and returns true
- * if they represent the <em>same</em> object using a class
- * specific comparison.
- *
- * @param object the object to compare with this object
- * @return <code>true</code> if the object is the same as this object and <code>false</code> otherwise
- *
- * @see #hashCode
- */
-@Override
-public boolean equals(Object object) {
-	if (this == object) return true;
-	if (!(object instanceof Region)) return false;
-	Region region = (Region)object;
-	return handle == region.handle;
-}
-
 /**
  * Returns a rectangle which represents the rectangular
  * union of the collection of polygons the receiver
@@ -359,21 +341,6 @@ public static Region gtk_new(Device device, long handle) {
 	return new Region(device, handle);
 }
 
-/**
- * Returns an integer hash code for the receiver. Any two
- * objects that return <code>true</code> when passed to
- * <code>equals</code> must return the same value for this
- * method.
- *
- * @return the receiver's hash
- *
- * @see #equals
- */
-@Override
-public int hashCode() {
-	return (int)handle;
-}
-
 /**
  * Intersects the given rectangle to the collection of polygons
  * the receiver maintains to describe its area.

bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/graphics/Region.java

@@ -241,24 +241,6 @@ void destroyHandlesExcept(Set<Integer> zoomLevels) {
 	});
 }
 
-/**
- * Compares the argument to the receiver, and returns true
- * if they represent the <em>same</em> object using a class
- * specific comparison.
- *
- * @param object the object to compare with this object
- * @return <code>true</code> if the object is the same as this object and <code>false</code> otherwise
- *
- * @see #hashCode
- */
-@Override
-public boolean equals (Object object) {
-	if (this == object) return true;
-	if (!(object instanceof Region)) return false;
-	Region rgn = (Region)object;
-	return getHandleForInitialZoom() == rgn.getHandleForInitialZoom();
-}
-
 /**
  * Returns a rectangle which represents the rectangular
  * union of the collection of polygons the receiver
@@ -283,20 +265,6 @@ Rectangle getBoundsInPixels() {
 	return new Rectangle(rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top);
 }
 
-/**
- * Returns an integer hash code for the receiver. Any two
- * objects that return <code>true</code> when passed to
- * <code>equals</code> must return the same value for this
- * method.
- *
- * @return the receiver's hash
- *
- * @see #equals
- */
-@Override
-public int hashCode () {
-	return (int)getHandleForInitialZoom();
-}
 
 /**
  * Intersects the given rectangle to the collection of polygons