Fix issues from code review

qt/widgets/common/inc/MantidQtWidgets/Common/ManageUserDirectories.ui

@@ -249,7 +249,7 @@
             <item>
              <widget class="QPushButton" name="pbExtBrowseToDir">
               <property name="text">
-               <string>Broswse to Directory</string>
+               <string>Browse to Directory</string>
               </property>
              </widget>
             </item>

qt/widgets/common/src/ManageUserDirectories.cpp

@@ -130,13 +130,6 @@ void ManageUserDirectories::loadProperties() {
                             "defaultsave.directory"))
                         .trimmed();
   m_uiForm.leDefaultSave->setText(saveDir);
-
-  //// extensions directory
-  // QString extDir = QString::fromStdString(
-  //                     Mantid::Kernel::ConfigService::Instance().getString(
-  //                         "user.python.plugins.directories"))
-  //                     .trimmed();
-  // m_uiForm.leExtensions->setText(extDir);
 }
 void ManageUserDirectories::saveProperties() {
   QString newSearchArchive = m_uiForm.cbSearchArchive->currentText().toLower();