Fix messed up collapse icon in measure dialog

Author: nyalldawson

src/ui/qgsmeasurebase.ui

@@ -119,18 +119,6 @@
       <string>Info</string>
      </property>
      <layout class="QVBoxLayout" name="verticalLayout">
-      <property name="leftMargin">
-       <number>3</number>
-      </property>
-      <property name="topMargin">
-       <number>3</number>
-      </property>
-      <property name="rightMargin">
-       <number>3</number>
-      </property>
-      <property name="bottomMargin">
-       <number>3</number>
-      </property>
       <item>
        <widget class="QLabel" name="mNotesLabel">
         <property name="text">