lcd: simplify lcd example Closes IDF-3009 and IDF-354 See merge request espressif/esp-idf!13823
This section provides examples how to configure and use ESP32’s internal peripherals like GPIO, UART, I2C, SPI, timers, counters, ADC / DAC, PWM, etc.
See the README.md file in the upper level examples directory for more information about examples.