Update trident-master.json

to see if palemoon builds

log file file stated;

=======================<phase: check-sanity   >============================
====> Two or more enabled options conflict with each other
=====> Option SNDIO conflicts with ALSA PULSEAUDIO (select only one)
*** Error code 1

trident-master.json

@@ -314,6 +314,7 @@
 	"www_firefox-esr_SET=PULSEAUDIO",
 	"www_iridium_UNSET=SNDIO PULSEAUDIO",
 	"www_iridium_SET=ALSA",
+	"www_palemoon_UNSET="ALSA PULSEAUDIO",
 	"www_node_SET=BUNDLED_SSL",
 	"www_node4_SET=BUNDLED_SSL",
 	"www_node6_SET=BUNDLED_SSL",