[build] Remove makest from build script

Removing the outdated reference to makest from the build scripts, which
should have been removed as part of the build_symbol_table.py change.

scripts/templates/build.ninja.j2

@@ -190,8 +190,7 @@ build $builddir/fatroot/jsix.elf : cp $builddir/jsix.elf
 build $builddir/fatroot/efi/boot/bootx64.efi : cp $builddir/boot/boot.efi
     name = bootloader to FAT image
 
-build ${builddir}/symbol_table.dat : makest ${builddir}/jsix.elf | $
-    ${builddir}/native/makest
+build ${builddir}/symbol_table.dat : makest ${builddir}/jsix.elf
 
 build $builddir/fatroot/initrd.img : makerd ${srcroot}/assets/initrd.toml | $
     ${builddir}/native/makerd $