Remove deprecated ro.adb.qemud property

This seems to have only ever been used in external/qemu on oreo, adb
doesn't use it to decide whether to look for the goldfish pipe, and no
other boards sets it any more. Remove it.

Bug: 129435174
Change-Id: Ibbfae6175e2184e397aee5898f8858d1278b7b3f
diff --git a/shared/device.mk b/shared/device.mk
index d17c367..53756bf 100644
--- a/shared/device.mk
+++ b/shared/device.mk
@@ -26,7 +26,6 @@
 PRODUCT_PROPERTY_OVERRIDES += \
     tombstoned.max_tombstone_count=500 \
     debug.hwui.swap_with_damage=0 \
-    ro.adb.qemud=0 \
     ro.carrier=unknown \
     ro.com.android.dataroaming=false \
     ro.com.google.locationfeatures=1 \