Bug 1358938 - Remove gonk config from moz.build. r=SingingTree

Re-applying Bug 1357323.

MozReview-Commit-ID: 6UcfIHWDwn5

--HG--
extra : rebase_source : 71b61606cfbc03c5b5d7064154f0e035c8393b32

media/libcubeb/src/moz.build

@@ -32,8 +32,6 @@ if CONFIG['MOZ_PULSEAUDIO']:
     ]
     DEFINES['USE_PULSE'] = True
     DEFINES['USE_PULSE_RUST'] = True
-    if CONFIG['MOZ_WIDGET_TOOLKIT'] == 'gonk':
-        DEFINES['DISABLE_LIBPULSE_DLOPEN'] = True
 
 if CONFIG['MOZ_JACK']:
     SOURCES += [