Delete ESP32README.md

since it is outdated

lib/libesp32/ESP32README.md

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-![Tasmota logo](/tools/logo/TASMOTA_FullLogo_Vector.svg)
-
-## ESP32 port with minimal changes
-## Description:
-This is my esp32 port, i try to make only minimal changes to the original source code 
-from Theo Arends, now again for development branch.
-
-## Checklist:
-  - [x] The pull request is done against the latest dev branch
-  - [x] Only relevant files were touched
-  - [x] Only one feature/fix was added per PR.
-  - [x] The code change is tested and works on core Tasmota_core_stage
-  - [ ] The code change pass travis tests. **Your PR cannot be merged unless tests pass**
-  - [x] I accept the [CLA](https://github.com/arendst/Tasmota/blob/development/CONTRIBUTING.md#contributor-license-agreement-cla).
-  - [x] i checked binary "tasmota.bin" to be the same in development and development_esp32 branch
-
-Here are the main things i have done
-
--   in "lib_extra_dirs" i have libesp32 directory for things missing in ESP32 framework
-    my "ESP32-to-ESP8266-compat" has all files that are not available in ESP32
-    so you dont have to change the source code and i write code to get the informations from ESP32
--   all librarys that are not compatibel i add to lib_ignore
--   all code that is not for ESP32 i put in "#ifdef ESP8266" the define is from espessif platform
--   all code for ESP32 is in "#ifdef ESP32"
--   SerConfu8 type uint8_t for SerialConfig list
--   changed "HTTP_HEADER" to "HTTP_HEADER1", in ESP32 its an enum
--   for ip adress 0 i used IPAddress(0,0,0,0)
--   Special ESP.xxx call i change to ESP_xxx (ESP_rtcUserMemoryWrite, ...) and write macros for ESP8266
--   because ESP32 has only WEMOS 32 modul, i exclude all code like this:
-    "if (SONOFF_xxx == Settings.module)" in "#ifdef ESP8266"
--   variable "sleep" i changed to "ssleep" because of standard library sleep(..) function
--   all esp32 stuff is in support_esp32.ino
--   in tasmota.ino i include "tasmota_compat.h"
--   in tasmota_template.h i use ifdef and tasmota_templESP32.h
--   defines for sensors that currently don't work, i undef in tasmota_templESP32.h
--   comment fo "no warnig" in "xdrv_20_hue.ino" thats the only warning i had
-
-Build info
-
-Copy platformio_override_esp32.ini to platformio_override.ini an select your imagetype. 
-You can build tasmota and tasmota32 Version with one build. 
-If you need other versions change platformio_override.ini
-
-stay at home, have fun and keep good
-
-Jörg