Remove luaFunc implementation from RLN
Merge this PR when android-app's version of kotlin-lib includes commit https://github.com/shosetsuorg/kotlin-lib/commit/c69b5937e29e0ca1c279343496370f925cc37774
Merge this PR when android-app's version of kotlin-lib includes commit https://github.com/shosetsuorg/kotlin-lib/commit/c69b5937e29e0ca1c279343496370f925cc37774