library: xilinx: scripts: versal_xcvr_subsystem: Remove unused source

Signed-off-by: Bogdan Luncan <bogdan.luncan@analog.com>

Author: bluncan

library/xilinx/scripts/versal_xcvr_subsystem.tcl

@@ -3,8 +3,6 @@
 ### SPDX short identifier: ADIBSD
 ###############################################################################
 
-source ../../../projects/scripts/adi_board.tcl
-
 # Parameter description:
 #   ip_name : The name of the created ip
 #   jesd_mode : Used physical layer encoder mode