Revert "feat: let ExoPlayer handle audio focus (pause on calls / other media apps)"

This reverts commit bce50d1d01.

amethyst/src/main/java/com/vitorpamplona/amethyst/service/playback/playerPool/ExoPlayerBuilder.kt

@@ -22,8 +22,6 @@ package com.vitorpamplona.amethyst.service.playback.playerPool
 
 import android.content.Context
 import androidx.annotation.OptIn
-import androidx.media3.common.AudioAttributes
-import androidx.media3.common.C
 import androidx.media3.common.MediaItem
 import androidx.media3.common.Player
 import androidx.media3.common.util.UnstableApi
@@ -69,18 +67,6 @@ class ExoPlayerBuilder(
             .apply {
                 setMediaSourceFactory(CustomMediaSourceFactory(videoCache, dataSourceFactory))
                 setLoadControl(feedTunedLoadControl())
-                // Let ExoPlayer own audio focus: pause when a call or another media app takes over
-                // (which flips isPlaying false, so V4V streaming payments stop with it) and duck for
-                // transient interruptions. USAGE_MEDIA so the system treats it as ordinary playback.
-                setAudioAttributes(
-                    AudioAttributes
-                        .Builder()
-                        .setUsage(C.USAGE_MEDIA)
-                        .setContentType(C.AUDIO_CONTENT_TYPE_MOVIE)
-                        .build(),
-                    // handleAudioFocus =
-                    true,
-                )
             }.build()
             .apply {
                 PcmTapRegistry.registerPlayer(this, sink)