AutoTest: Fix tool tip handling on settings page

Remove the stray tool tip information of the ui page and
explicitly set one where missing.
Fixes that widgets without an explicit set tool tip had
the wrongly placed one as a derived property.

Change-Id: I0d8bb8a8c39590205a3559a6c66842bc2fd5048f
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>
Reviewed-by: David Schulz <david.schulz@qt.io>

src/plugins/autotest/catch/catchtestsettingspage.ui

@@ -10,9 +10,6 @@
     <height>323</height>
    </rect>
   </property>
-  <property name="toolTip">
-   <string>Confidence interval used for bootstrapping.</string>
-  </property>
   <layout class="QVBoxLayout" name="verticalLayout_2">
    <item>
     <layout class="QHBoxLayout" name="horizontalLayout_2">
@@ -149,6 +146,9 @@
         <layout class="QHBoxLayout" name="resamplesHL">
          <item>
           <widget class="QCheckBox" name="resamplesCB">
+           <property name="toolTip">
+            <string>Number of resamples used for statistical bootstrapping.</string>
+           </property>
            <property name="text">
             <string>Benchmark resamples</string>
            </property>
@@ -186,6 +186,9 @@
         <layout class="QHBoxLayout" name="confIntHL">
          <item>
           <widget class="QCheckBox" name="confIntCB">
+           <property name="toolTip">
+            <string>Confidence interval used for statistical bootstrapping.</string>
+           </property>
            <property name="text">
             <string>Benchmark confidence interval</string>
            </property>