Clean up codes, fix long lines, improve readability, etc

Update copyright date, remove unused variable, import

Change-Id: I731c48c8e5b16cbee5230f1d02109f249b8bab5d

src/com/android/settings/bluetooth/A2dpProfile.java

@@ -196,7 +196,8 @@ final class A2dpProfile implements LocalBluetoothProfile {
         if (V) Log.d(TAG, "finalize()");
         if (mService != null) {
             try {
-                BluetoothAdapter.getDefaultAdapter().closeProfileProxy(BluetoothProfile.A2DP, mService);
+                BluetoothAdapter.getDefaultAdapter().closeProfileProxy(BluetoothProfile.A2DP,
+                                                                       mService);
                 mService = null;
             }catch (Throwable t) {
                 Log.w(TAG, "Error cleaning up A2DP proxy", t);