Remove redundant subheaders for composer panels with appropriate titles

Author: dakcarto

src/ui/qgsatlascompositionwidgetbase.ui

@@ -26,16 +26,6 @@
    <property name="margin">
     <number>0</number>
    </property>
-   <item>
-    <widget class="QLabel" name="label">
-     <property name="styleSheet">
-      <string notr="true">padding: 2px; font-weight: bold; background-color: rgb(200, 200, 200);</string>
-     </property>
-     <property name="text">
-      <string>Atlas generation</string>
-     </property>
-    </widget>
-   </item>
    <item>
     <widget class="QFrame" name="verticalFrame">
      <property name="frameShape">
@@ -100,8 +90,8 @@
           <rect>
            <x>0</x>
            <y>0</y>
-           <width>416</width>
-           <height>562</height>
+           <width>431</width>
+           <height>566</height>
           </rect>
          </property>
          <layout class="QVBoxLayout" name="mainLayout">

src/ui/qgscompositionwidgetbase.ui

@@ -26,22 +26,6 @@
    <property name="margin">
     <number>0</number>
    </property>
-   <item>
-    <widget class="QLabel" name="label_10">
-     <property name="sizePolicy">
-      <sizepolicy hsizetype="Preferred" vsizetype="Maximum">
-       <horstretch>0</horstretch>
-       <verstretch>0</verstretch>
-      </sizepolicy>
-     </property>
-     <property name="styleSheet">
-      <string notr="true">padding: 2px; font-weight: bold; background-color: rgb(200, 200, 200);</string>
-     </property>
-     <property name="text">
-      <string>Composition</string>
-     </property>
-    </widget>
-   </item>
    <item>
     <widget class="QScrollArea" name="scrollArea">
      <property name="sizePolicy">
@@ -65,7 +49,7 @@
         <x>0</x>
         <y>0</y>
         <width>292</width>
-        <height>764</height>
+        <height>785</height>
        </rect>
       </property>
       <layout class="QVBoxLayout" name="verticalLayout_2">