[Build] Remove outdated ESP8266-only Flash tools from disrtibution

dist/README.txt

@@ -102,19 +102,8 @@ The remedy is often to flash the same build another time via serial.
 There does seem to be some correlation to bad OTA flashes and flash chips made by XMC, but it is not exclusive to this brand of flash chips.
 
 
-ESP.Easy.Flasher.exe...
-... is the new flashing tool for ESP Easy. You need to run it in elevated mode (as admin)
-for it to fetch the COM ports correctly. If you want you may save YOUR settings using the
-"Save as default settings" button in the lower left corner. If the window is too big or
-too small you can experiment with the "Pixels Per Inch" variable in the
-..\Settings\Default.ini file. Setting it to =96 is working for most users but the
-application will try to find the most optimal value by default. Sometimes it fails to
-do that. More information about the tool is found here:
-https://github.com/Grovkillen/ESP_Easy_Flasher
-You can also have custom serial commands entered in a txt file. One command per line.
-
-
-For flashing ESP32 you need Espressif's own Flash Download Tools.
+For flashing it is advised to use Espressif's own Flash Download Tools.
+A recent version is included in the .zip file.
 The latest version can be downloaded from: https://www.espressif.com/en/support/download/other-tools