[Tizen] Remove changes that were added to tag media role as "browser".

These changes are not needed anymore since the Murphy integration is in
place and we are setting media role for streams while creating Murphy
resource.

media/audio/pulse/pulse.sigs

@@ -50,8 +50,3 @@ void pa_stream_unref(pa_stream* s);
 int pa_context_errno(pa_context *c);
 const char* pa_strerror(int error);
 pa_cvolume* pa_cvolume_set(pa_cvolume* a, unsigned  channels, pa_volume_t v);
-# Functions from pulse used in TIZEN to tag the audio stream as "browser".
-pa_proplist* pa_proplist_new(void);
-void pa_proplist_free(pa_proplist* p);
-int pa_proplist_sets(pa_proplist *p, const char *key, const char *value);
-pa_stream* pa_stream_new_with_proplist(pa_context* c, const char* name, const pa_sample_spec* ss, const pa_channel_map* map, pa_proplist* proplist);

media/audio/pulse/pulse_util.cc

@@ -259,16 +259,7 @@ bool CreateOutputStream(pa_threaded_mainloop** mainloop,
     // than the default channel map (NULL).
     map = &source_channel_map;
   }
-#if defined(OS_TIZEN)
-  pa_proplist* proplist = pa_proplist_new();
-  pa_proplist_sets(proplist, PA_PROP_MEDIA_ROLE, "browser");
-  *stream = pa_stream_new_with_proplist(*context, "Playback",
-                                        &sample_specifications,
-                                        map, proplist);
-  pa_proplist_free(proplist);
-#else
   *stream = pa_stream_new(*context, "Playback", &sample_specifications, map);
-#endif
   RETURN_ON_FAILURE(*stream, "failed to create PA playback stream");
 
   pa_stream_set_state_callback(*stream, stream_callback, user_data);