do not handle errors on mktemp in shell scripts

errors are not defined for mktemp, and the /tmp file
system should be assumed reliable.

if /tmp is *unreliable*, then this is not something that
lbmk either can or should fix; the user clearly has
bigger problems.

manpages for mktemp do not define errors. it is assumed
to be completely reliable.

Signed-off-by: Leah Rowe <leah@libreboot.org>

script/build/boot/roms_helper

@@ -263,8 +263,7 @@ build_grub_roms()
 		    -n background.png -t raw
 	fi
 
-	tmpcfg=$(mktemp -t coreboot_rom.XXXXXXXXXX) || 
-	    err "build_grub_roms: cannot create temporary scan.cfg"
+	tmpcfg=$(mktemp -t coreboot_rom.XXXXXXXXXX)
 	x_ printf "set grub_scan_disk=\"%s\"\n" "${grub_scan_disk}" >"${tmpcfg}"
 	[ "${grub_scan_disk}" = "both" ] || \
 	    x_ "${cbfstool}" "${tmprom}" add -f "${tmpcfg}" -n scan.cfg -t raw
@@ -302,8 +301,7 @@ mkGrubRom() {
 
 	keymapcfg="elf/grub/keymap_${_keymap}.cfg"
 
-	tmprom=$(mktemp -t coreboot_rom.XXXXXXXXXX) || \
-	    err "mkGrubRom: cannot create tmprom"
+	tmprom=$(mktemp -t coreboot_rom.XXXXXXXXXX)
 	x_ cp "${_cbrom}" "${tmprom}"
 	x_ "${cbfstool}" "${tmprom}" add -f "${keymapcfg}" -n keymap.cfg -t raw
 

script/handle/make/config

@@ -18,7 +18,7 @@ export LOCALVERSION="-${projectname}-${our_version}"
 eval "$(setvars "" arch cfgsdir codedir config config_name crossgcc_ada mode \
     elfdir listfile project romtype target target_dir targets tree cbfstool)"
 
-tmpclean="$(mktemp -d -t makeclean.XXXXXXXXXX)" || fail "!mkdir tmpclean"
+tmpclean="$(mktemp -d -t makeclean.XXXXXXXXXX)"
 
 main()
 {