Bug 572036 - Remove pack call on the left/right buttons in the divider

Buttons are initial invisible and the layout manager is supposed to
handle the sizing.

Change-Id: I09289fab59595bcd05449e71051189c1259b5d6e
Signed-off-by: Lars Vogel <Lars.Vogel@vogella.com>
diff --git a/bundles/org.eclipse.compare/compare/org/eclipse/compare/contentmergeviewer/TextMergeViewer.java b/bundles/org.eclipse.compare/compare/org/eclipse/compare/contentmergeviewer/TextMergeViewer.java
index 823c19e..45bdb29 100644
--- a/bundles/org.eclipse.compare/compare/org/eclipse/compare/contentmergeviewer/TextMergeViewer.java
+++ b/bundles/org.eclipse.compare/compare/org/eclipse/compare/contentmergeviewer/TextMergeViewer.java
@@ -2457,7 +2457,6 @@
 			fLeftToRightButton.setText(COPY_LEFT_TO_RIGHT_INDICATOR);
 			fLeftToRightButton.setToolTipText(
 					Utilities.getString(getResourceBundle(), "action.CopyDiffLeftToRight.tooltip")); //$NON-NLS-1$
-			fLeftToRightButton.pack();
 			fLeftToRightButton.setVisible(false);
 			fLeftToRightButton.addSelectionListener(
 				new SelectionAdapter() {
@@ -2473,7 +2472,6 @@
 			fRightToLeftButton.setText(COPY_RIGHT_TO_LEFT_INDICATOR);
 			fRightToLeftButton.setToolTipText(
 					Utilities.getString(getResourceBundle(), "action.CopyDiffRightToLeft.tooltip")); //$NON-NLS-1$
-			fRightToLeftButton.pack();
 			fRightToLeftButton.setVisible(false);
 			fRightToLeftButton.addSelectionListener(
 					new SelectionAdapter() {