jesd204: jesd204_up_sysref: Remove unused signals

These signals are leftovers of an earlier implementation version, remove
them.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>

library/jesd204/axi_jesd204_common/jesd204_up_sysref.v

@@ -65,9 +65,6 @@ module jesd204_up_sysref (
   input core_event_sysref_edge
 );
 
-reg up_status_sysref_alignment_error = 1'b0;
-wire up_status_sysref_captured;
-
 reg [1:0] up_sysref_status;
 reg [1:0] up_sysref_status_clear;
 wire [1:0] up_sysref_event;