xpp: waitfor_xpds: assume astribank_is_starting exists

It's in the same package (dahdi-tools) for a long time

Signed-off-by: Tzafrir Cohen <tzafrir.cohen@xorcom.com>
(cherry picked from commit cd6083b6ce)

xpp/waitfor_xpds

@@ -94,10 +94,7 @@ if ! dahdi_hardware="`which dahdi_hardware 2>/dev/null`"; then
 	echo >&2 "$0: Missing dahdi_hardware"
 	exit 0
 fi
-if ! astribank_is_starting="`which astribank_is_starting 2>/dev/null`"; then
-	echo >&2 "$0: Missing astribank_is_starting"
-	exit 0
-fi
+
 if [ "`$dahdi_hardware | grep xpp_usb`" != "" ]; then
 	astribank_is_starting -v -a
 fi