Update repositories.txt

The two deleted libraries have been removed intentionally. They have now been combined into this better version of the library that is more reliable and supports more devices: https://github.com/Rupakpoddar/FirebaseArduino

All three libraries created and managed by the same developer (me).

Author: Rupakpoddar

repositories.txt

@@ -5412,9 +5412,7 @@ https://github.com/ruiseixasm/Robust-EEPROM
 https://github.com/ruiseixasm/Versatile_RotaryEncoder
 https://github.com/ruminize/FlashLightLED
 https://github.com/Rupakpoddar/FirebaseArduino
-https://github.com/Rupakpoddar/ESP32Firebase
 https://github.com/Rupakpoddar/ESP32Webhook
-https://github.com/Rupakpoddar/ESP8266Firebase
 https://github.com/Rupakpoddar/ESP8266Webhook
 https://github.com/rv701/SPL06-007
 https://github.com/RyoKosaka/HelloDrum-arduino-Library