remove unnecessary overrides of deprecated copyCursor method

src/main/java/net/imglib2/roi/labeling/LabelRegionCursor.java

@@ -56,10 +56,4 @@ public LabelRegionCursor copy()
 	{
 		return new LabelRegionCursor( this );
 	}
-
-	@Override
-	public LabelRegionCursor copyCursor()
-	{
-		return copy();
-	}
 }

src/main/java/net/imglib2/roi/util/SamplingCursor.java

@@ -63,12 +63,6 @@ public T getType()
 	@Override
 	public SamplingCursor< T > copy()
 	{
-		return new SamplingCursor< T >( source.copyCursor(), target.copyRandomAccess() );
-	}
-
-	@Override
-	public SamplingCursor< T > copyCursor()
-	{
-		return copy();
+		return new SamplingCursor<>( source.copy(), target.copy() );
 	}
 }

src/main/java/net/imglib2/roi/util/iterationcode/IterationCodeCursor.java

@@ -111,10 +111,4 @@ public IterationCodeCursor copy()
 	{
 		return new IterationCodeCursor( this );
 	}
-
-	@Override
-	public IterationCodeCursor copyCursor()
-	{
-		return copy();
-	}
 }

src/main/java/net/imglib2/roi/util/iterationcode/IterationCodeListCursor.java

@@ -111,10 +111,4 @@ public IterationCodeListCursor copy()
 	{
 		return new IterationCodeListCursor( this );
 	}
-
-	@Override
-	public IterationCodeListCursor copyCursor()
-	{
-		return copy();
-	}
 }