Cleanup: fix compiler warning

Warning C4551: function call missing argument list.

Pull Request: https://projects.blender.org/blender/blender/pulls/107237

source/blender/editors/interface/interface_handlers.cc

@@ -3158,12 +3158,14 @@ static bool ui_textedit_insert_buf(uiBut *but,
   return changed;
 }
 
+#ifdef WITH_INPUT_IME
 static bool ui_textedit_insert_ascii(uiBut *but, uiHandleButtonData *data, const char ascii)
 {
   BLI_assert(isascii(ascii));
   const char buf[2] = {ascii, '\0'};
   return ui_textedit_insert_buf(but, data, buf, sizeof(buf) - 1);
 }
+#endif
 
 static void ui_textedit_move(uiBut *but,
                              uiHandleButtonData *data,
@@ -3940,9 +3942,6 @@ static void ui_do_but_textedit(
   else if (event->type == WM_IME_COMPOSITE_END) {
     changed = true;
   }
-#else
-  /* Prevent the function from being unused. */
-  (void)ui_textedit_insert_ascii;
 #endif
 
   if (changed) {