remove whitespaces and unneeded code

openlp/core/lib/toolbar.py

@@ -28,8 +28,6 @@ Provide common toolbar handling for OpenLP
 """
 import logging
 
-from PyQt4 import QtCore, QtGui
-
 from openlp.core.lib import build_icon
 
 log = logging.getLogger(__name__)
@@ -51,7 +49,7 @@ class OpenLPToolbar(QtGui.QToolBar):
         log.debug(u'Init done')
 
     def addToolbarButton(self, title, icon, tooltip=None, slot=None,
-        checkable=False,  shortcut=0,  alternate=0,
+        checkable=False, shortcut=0, alternate=0,
         context=QtCore.Qt.WidgetShortcut):
         """
         A method to help developers easily add a button to the toolbar.

openlp/core/ui/servicemanager.py

@@ -155,13 +155,13 @@ class ServiceManager(QtGui.QWidget):
             u':/services/service_top.png',
             translate('OpenLP.ServiceManager',
             'Move item to the top of the service.'),
-            self.onServiceTop,  shortcut=QtCore.Qt.Key_Home)
+            self.onServiceTop, shortcut=QtCore.Qt.Key_Home)
         self.serviceManagerList.moveUp = self.orderToolbar.addToolbarButton(
             translate('OpenLP.ServiceManager', 'Move &up'),
             u':/services/service_up.png',
             translate('OpenLP.ServiceManager',
             'Move item up one position in the service.'),
-            self.onServiceUp,  shortcut=QtCore.Qt.Key_PageUp)
+            self.onServiceUp, shortcut=QtCore.Qt.Key_PageUp)
         self.serviceManagerList.moveDown = self.orderToolbar.addToolbarButton(
             translate('OpenLP.ServiceManager', 'Move &down'),
             u':/services/service_down.png',

openlp/core/ui/slidecontroller.py

@@ -432,9 +432,6 @@ class SlideController(QtGui.QWidget):
         self.display.imageManager = self.parent.renderManager.image_manager
         self.display.alertTab = self.alertTab
         self.display.setup()
-        self.SlidePreview.setFixedSize(
-            QtCore.QSize(self.settingsmanager.slidecontroller_image,
-            self.settingsmanager.slidecontroller_image / self.ratio))
         if self.isLive:
             self.display.addActions(
                 [self.previousItem,