Remove AUDIO_LOCATION_INVALID from the flags

The AUDIO_LOCATION_INVALID could not be in the flags. It would always
get 0 as the following check flags & AUDIO_LOCATION_INVALID != 0

Bug: 224542167
Test: make build
Change-Id: I44bbcaa1bb7f29c244be2fd960f024b7cc3eb79b
diff --git a/framework/java/android/bluetooth/BluetoothLeAudio.java b/framework/java/android/bluetooth/BluetoothLeAudio.java
index 56dc9b6..f172261 100644
--- a/framework/java/android/bluetooth/BluetoothLeAudio.java
+++ b/framework/java/android/bluetooth/BluetoothLeAudio.java
@@ -531,7 +531,6 @@
     /** @hide */
     @IntDef(flag = true, prefix = "AUDIO_LOCATION_",
             value = {
-            AUDIO_LOCATION_INVALID,
             AUDIO_LOCATION_FRONT_LEFT,
             AUDIO_LOCATION_FRONT_RIGHT,
             AUDIO_LOCATION_FRONT_CENTER,