GUI: Removed some useless maximum size constraints

sdrgui/gui/channeladddialog.ui

@@ -22,12 +22,6 @@
   <layout class="QVBoxLayout" name="verticalLayout">
    <item>
     <widget class="QGroupBox" name="groupBox">
-     <property name="maximumSize">
-      <size>
-       <width>16777215</width>
-       <height>70</height>
-      </size>
-     </property>
      <property name="font">
       <font>
        <family>Liberation Sans</family>

sdrgui/gui/samplingdevicedialog.ui

@@ -2,12 +2,6 @@
 <ui version="4.0">
  <class>SamplingDeviceDialog</class>
  <widget class="QDialog" name="SamplingDeviceDialog">
-  <property name="font">
-   <font>
-    <family>Liberation Sans</family>
-    <pointsize>9</pointsize>
-   </font>
-  </property>
   <property name="geometry">
    <rect>
     <x>0</x>
@@ -16,18 +10,18 @@
     <height>139</height>
    </rect>
   </property>
+  <property name="font">
+   <font>
+    <family>Liberation Sans</family>
+    <pointsize>9</pointsize>
+   </font>
+  </property>
   <property name="windowTitle">
    <string>Select sampling device</string>
   </property>
   <layout class="QVBoxLayout" name="verticalLayout">
    <item>
     <widget class="QGroupBox" name="groupBox">
-     <property name="maximumSize">
-      <size>
-       <width>16777215</width>
-       <height>70</height>
-      </size>
-     </property>
      <property name="font">
       <font>
        <family>Liberation Sans</family>
@@ -40,12 +34,12 @@
      <layout class="QFormLayout" name="formLayout">
       <item row="0" column="1">
        <widget class="QComboBox" name="deviceSelect">
-	     <property name="font">
-	      <font>
-	       <family>Liberation Sans</family>
-	       <pointsize>9</pointsize>
-	      </font>
-	     </property>
+        <property name="font">
+         <font>
+          <family>Liberation Sans</family>
+          <pointsize>9</pointsize>
+         </font>
+        </property>
        </widget>
       </item>
      </layout>