Fixed quartus 19 compile flow

commented out some 'global_assignment's (unb2b_board.qsf) & 'instance_assignment' (unb2b_minimal_pins.tcl)

Closes L2SDP-143

boards/uniboard2b/libraries/unb2b_board/quartus/pinning/unb2b_minimal_pins.tcl

@@ -19,7 +19,7 @@ set_instance_assignment -name XCVR_A10_RX_TERM_SEL R_R1 -to PPS
 
 # IO Standard Assignments from Gijs (excluding memory)
 set_instance_assignment -name IO_STANDARD "1.8 V" -to ETH_CLK
-set_instance_assignment -name GLOBAL_SIGNAL "GLOBAL CLOCK" -to ETH_CLK
+#set_instance_assignment -name GLOBAL_SIGNAL "GLOBAL CLOCK" -to ETH_CLK
 set_instance_assignment -name IO_STANDARD LVDS -to ETH_SGIN[0]
 set_instance_assignment -name IO_STANDARD LVDS -to "ETH_SGIN[0](n)"
 set_instance_assignment -name IO_STANDARD LVDS -to ETH_SGIN[1]