Remove usage of ktx dependencies

[shubhamsinghshubham777]

Since the Kotlin extensions (KTX) APIs have been added to their respective main modules, this library should also drop using ktx dependencies to avoid the end-users seeing warnings/issues like:

Failed to resolve: com.google.firebase:firebase-database-ktx

Ref: https://firebase.google.com/docs/android/kotlin-migration

[Breens-Mbaka]

Since the Kotlin extensions (KTX) APIs have been added to their respective main modules, this library should also drop using ktx dependencies to avoid the end-users seeing warnings/issues like:

Failed to resolve: com.google.firebase:firebase-database-ktx

Ref: https://firebase.google.com/docs/android/kotlin-migration

I encountered the same issue when adding Gitlive Firebase auth latest version:

I had to add this to Firebase depencies to the androidMain dependencies to fix it mirzemehdi/KMPAuth#58:

implementation("com.google.firebase:firebase-common-ktx:21.0.0")
implementation("com.google.firebase:firebase-auth-ktx:21.0.0")