Remove MediaDevice list filtering methods from InfoMediaManager.

These methods are unnecessary since they simply perform filtering on the
MediaDevice list returned by InfoMediaManager#onDeviceListUpdate
callback. Instead the clients of InfoMediaManager can do filtering based
on their needs.

Bug: 432107581
Bug: 428663871
Test: atest com.android.systemui.media.dialog
Test: atest com.android.settingslib.media
Flag: EXEMPT refactor

Change-Id: If8c761f844ffc891c20ea575056c8a9b1db8d64d