* configure.ac: Remove --enable-grub-pe2elf. Only build
grub-pe2elf when needed by the build system itself.
* conf/common.rmk: Remove $(enable_grub_pe2elf) check.
* configure.ac: Remove --enable-grub-pe2elf. Only build
grub-pe2elf when needed by the build system itself.
* conf/common.rmk: Remove $(enable_grub_pe2elf) check.