fpga/max80.qsf: remove duplicate entry for esp.sv

esp.sv is listed twice in max80.qsf. Not really harmful, but
unnecessary.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

fpga/max80.qsf

@@ -227,7 +227,6 @@ set_global_assignment -name SYSTEMVERILOG_FILE functions.sv
 set_global_assignment -name SYSTEMVERILOG_FILE spi_master.sv
 set_global_assignment -name SYSTEMVERILOG_FILE sdram.sv
 set_global_assignment -name SYSTEMVERILOG_FILE spirom.sv
-set_global_assignment -name SYSTEMVERILOG_FILE esp.sv
 set_global_assignment -name SYSTEMVERILOG_FILE clkbuf.sv
 set_global_assignment -name VERILOG_FILE ip/ddio_out.v
 set_global_assignment -name TCL_SCRIPT_FILE scripts/post_quartus_asm.tcl