Remove unnecessary stepType setting from cwsender.ui

cwsender.ui

@@ -409,9 +409,6 @@
         <property name="singleStep">
          <double>0.100000000000000</double>
         </property>
-        <property name="stepType">
-         <enum>QAbstractSpinBox::DefaultStepType</enum>
-        </property>
         <property name="value">
          <double>3.000000000000000</double>
         </property>