Revert "AudioEffect: prevent adding effect for unknown session o..."

Revert submission 25712917

Reason for revert: Droid-monitor triggered revert likely due to breakage in b/330202134. Will be verifying through ABTD before submission.

Reverted changes: /q/submissionid:25712917

Change-Id: I8b5a30920d54f1ebf49d0073426150933f057398
diff --git a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
index bee1e8e..154172a 100644
--- a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
+++ b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
@@ -3577,7 +3577,7 @@
                                 int session,
                                 int id)
 {
-    if (session != AUDIO_SESSION_DEVICE && io != AUDIO_IO_HANDLE_NONE) {
+    if (session != AUDIO_SESSION_DEVICE) {
         ssize_t index = mOutputs.indexOfKey(io);
         if (index < 0) {
             index = mInputs.indexOfKey(io);