The error in your log is:
update-initramfs: Deleting /boot/initrd.img-4.4.0-171-generic
/etc/kernel/postrm.d/zz-update-grub:
Searching for GRUB installation directory ... found: /boot/grub
Searching for default file ... found: /boot/grub/default
Testing for an existing GRUB menu.lst file ...
Could not find /boot/grub/menu.lst file. Would you like /boot/grub/menu.lst
generated for you? (y/N) /usr/sbin/update-grub: linha 1094: read: erro de
leitura: 0: Descritor de arquivo inválido
run-parts: /etc/kernel/postrm.d/zz-update-grub exited with return code 1
dpkg: erro ao processar o pacote linux-image-4.4.0-171-generic (--remove):
sub-processo script post-removal instalado retornou estado de saída de erro 1
You have installed the 'grub' package, which is grub1, instead of the
grub-pc package, which is grub2, and have not configured it. This is an
error. You should remove the grub1 package from your system with 'apt-
get remove --purge grub'.
** Changed in: grub (Ubuntu)
Status: New => Invalid
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https://bugs.launchpad.net/bugs/1877521
Title:
package linux-image-4.4.0-171-generic 4.4.0-171.200 failed to
install/upgrade: run-parts: /etc/kernel/postrm.d/zz-update-grub exited
with return code 1
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