Clear Tcl setting

Hi,

I follow the quartus tutorial and taip the command as below. How to clear the following setting? because the quartus will run it when I compile.thank

"set_global_assignment -name PRE_FLOW_SCRIPT_FILE quartus_sh:first.tclset_global_assignment -name POST_MODULE_SCRIPT_FILE quartus_sh:next.tcl

set_global_assignment -name POST_FLOW_SCRIPT_FILE quartus_sh:last.tcl "