Removed pointless HTML-tag

Change-Id: I2c7bab63dbfa5ca2454adbfff042892ea03aff60
Reviewed-by: Eike Ziller <eike.ziller@theqtcompany.com>

src/plugins/coreplugin/systemsettings.ui

@@ -252,7 +252,7 @@
          <item>
           <widget class="QLabel" name="label">
            <property name="toolTip">
-            <string>&lt;html&gt;Influences how file names are matched to decide if they are the same.</string>
+            <string>Influences how file names are matched to decide if they are the same.</string>
            </property>
            <property name="text">
             <string>File system case sensitivity:</string>