Remove the wasm library from the sky_engine package (#22525)
Remove the wasm library from the sky_engine package (#22525)

wasm was removed in a recent Dart roll
(https://github.com/flutter/engine/commit/8d332b7ae3205e33e0c7a9b16bb5a04abc9e786f)
jason-simmons/sky_engine,jamesr/sky_engine,Hixie/sky_engine,jamesr/flutter_engine,jason-simmons/flutter_engine,chinmaygarde/flutter_engine,devoncarew/sky_engine,jamesr/flutter_engine,flutter/engine,jason-simmons/flutter_engine,jamesr/sky_engine,jason-simmons/flutter_engine,flutter/engine,aam/engine,jamesr/sky_engine,Hixie/sky_engine,jamesr/flutter_engine,chinmaygarde/sky_engine,Hixie/sky_engine,jason-simmons/sky_engine,devoncarew/engine,devoncarew/engine,rmacnak-google/engine,jamesr/sky_engine,jason-simmons/sky_engine,aam/engine,flutter/engine,rmacnak-google/engine,flutter/engine,aam/engine,aam/engine,chinmaygarde/sky_engine,jason-simmons/sky_engine,jamesr/flutter_engine,chinmaygarde/flutter_engine,jamesr/flutter_engine,chinmaygarde/sky_engine,jason-simmons/sky_engine,aam/engine,aam/engine,rmacnak-google/engine,devoncarew/engine,jason-simmons/flutter_engine,jamesr/flutter_engine,devoncarew/sky_engine,jamesr/sky_engine,devoncarew/engine,jason-simmons/flutter_engine,chinmaygarde/sky_engine,flutter/engine,jamesr/flutter_engine,chinmaygarde/flutter_engine,rmacnak-google/engine,rmacnak-google/engine,devoncarew/sky_engine,chinmaygarde/sky_engine,aam/engine,jamesr/sky_engine,chinmaygarde/flutter_engine,jason-simmons/flutter_engine,Hixie/sky_engine,jason-simmons/sky_engine,jamesr/sky_engine,Hixie/sky_engine,jason-simmons/flutter_engine,chinmaygarde/sky_engine,flutter/engine,devoncarew/sky_engine,devoncarew/engine,devoncarew/sky_engine,Hixie/sky_engine,jamesr/flutter_engine,chinmaygarde/flutter_engine,aam/engine,chinmaygarde/flutter_engine,jason-simmons/sky_engine,rmacnak-google/engine,devoncarew/sky_engine,Hixie/sky_engine,flutter/engine,rmacnak-google/engine,jamesr/flutter_engine,flutter/engine,Hixie/sky_engine,devoncarew/sky_engine,jason-simmons/flutter_engine,devoncarew/engine,chinmaygarde/sky_engine,devoncarew/engine,chinmaygarde/flutter_engine