Remove unnecessary accelerators from .ui files

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>
(cherry picked from commit e56bd3156d)

src/config/configdialog.ui

@@ -101,9 +101,6 @@
                                 <property name="text">
                                     <string>Alwa&amp;ys</string>
                                 </property>
-                                <property name="accel">
-                                    <string>Alt+Y</string>
-                                </property>
                                 <property name="whatsThis" stdset="0">
                                     <string>Always draw rounded window top corners.</string>
                                 </property>
@@ -115,9 +112,6 @@
                                 <property name="text">
                                     <string>Not maximi&amp;zed</string>
                                 </property>
-                                <property name="accel">
-                                    <string>Alt+Z</string>
-                                </property>
                                 <property name="whatsThis" stdset="0">
                                     <string>Draw rounded top corners if the window is not maximized.</string>
                                 </property>
@@ -129,9 +123,6 @@
                                 <property name="text">
                                     <string>Ne&amp;ver</string>
                                 </property>
-                                <property name="accel">
-                                    <string>Alt+V</string>
-                                </property>
                                 <property name="whatsThis" stdset="0">
                                     <string>Never draw rounded window top corners.</string>
                                 </property>