Undo RMTHi change to platformio.ini

PlatformIO's Library Dependency Finder will take care of it based on
the #include.

Author: willmmiles

platformio.ini

@@ -139,7 +139,6 @@ lib_deps =
     fastled/FastLED @ 3.6.0
     IRremoteESP8266 @ 2.8.2
     makuna/NeoPixelBus @ 2.8.3
-    NeoESPRmtHI
     https://github.com/Aircoookie/ESPAsyncWebServer.git#v2.4.2
   # for I2C interface
     ;Wire