Remove explanation about how to activate the emoji panel

* This is related to Windows, not to the add-on, and can be changed in future versions or not work for all keyboard languages.
* Other procedures, such as touch gestures, could be used.
* The word period followed by . may be confussing:

Thanks to @BlindHelp and @CristianML
https://nvdaes.groups.io/g/lista/message/418

readme.md

@@ -59,7 +59,7 @@ These are the key commands available by default, you can edit those or add new k
 * NVDA+E: speaking emoticons on/off, toggles between speaking text as it is written, or with the emoticons replaced by the human description.
 * NVDA+I: show a dialog to select an emoticon you want to copy.
 
-Note: On Windows 10, it's also possible to use the built-in emoji panel. Focus any edit control, press Windows. period and use arrow and tab keys to type the desired emoji.
+Note: On Windows 10, it's also possible to use the built-in emoji panel.
 
 ## Changes for 9.0 ##