qt: remove extraneous padding introduced in multiwallet support patch

solve issue #2529

src/qt/walletframe.cpp

@@ -20,8 +20,10 @@ WalletFrame::WalletFrame(BitcoinGUI *_gui) :
 {
     // Leave HBox hook for adding a list view later
     QHBoxLayout *walletFrameLayout = new QHBoxLayout(this);
+    setContentsMargins(0,0,0,0);
     walletStack = new WalletStack(this);
     walletStack->setBitcoinGUI(gui);
+    walletFrameLayout->setContentsMargins(0,0,0,0);
     walletFrameLayout->addWidget(walletStack);
 }
 

src/qt/walletstack.cpp

@@ -16,6 +16,7 @@ WalletStack::WalletStack(QWidget *parent) :
     clientModel(0),
     bOutOfSync(true)
 {
+    setContentsMargins(0,0,0,0);
 }
 
 WalletStack::~WalletStack()