wxwidgets.cfg: Removed not needed '<use-reval/>'-tags.

Author: orbitcowboy

cfg/wxwidgets.cfg

@@ -10736,7 +10736,6 @@
     <noreturn>false</noreturn>
     <returnValue type="wxString &amp;"/>
     <leak-ignore/>
-    <use-retval/>
     <arg nr="1" direction="in">
       <not-uninit/>
     </arg>
@@ -10750,7 +10749,6 @@
     <noreturn>false</noreturn>
     <returnValue type="wxString &amp;"/>
     <leak-ignore/>
-    <use-retval/>
     <arg nr="1" direction="in">
       <not-uninit/>
     </arg>