obsolete entries in Autoexec.bat file

[Santander]

where to clean obsolete entries from Autoexec.bat file? These lines are
shown during boot process as info.
I want left only default windows autoexec.bat entries, since dont use old
DOS application(clipper,etc). Which lines should be left?

Autoexec.bat tab contains:

set clipper=f250
set temp=c:\temp
set path=c:;c:\util
lh c:\util\union
lh c:\util\lvb_scr
mode con codepage prepare={{866}C:\WINDOWS\COMMAND\ega3.cpi}
mode con codepage select=866


should I left only this 3 lines:
set temp=c:\temp
mode con codepage prepare={{866}C:\WINDOWS\COMMAND\ega3.cpi}
mode con codepage select=866

or this also?
set path=c:;