upgrade output

abhishek@abhishek-Lenovo-Z580:~$ sudo apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following packages will be REMOVED:
  linux-image-3.13.0-45-generic linux-image-extra-3.13.0-45-generic
0 upgraded, 0 newly installed, 2 to remove and 0 not upgraded.
2 not fully installed or removed.
After this operation, 194 MB disk space will be freed.
Do you want to continue? [Y/n] y
(Reading database ... 621290 files and directories currently installed.)
Removing linux-image-extra-3.13.0-45-generic (3.13.0-45.74) ...
depmod: FATAL: could not load /boot/System.map-3.13.0-45-generic: No such file or directory
run-parts: executing /etc/kernel/postinst.d/apt-auto-removal 3.13.0-45-generic /boot/vmlinuz-3.13.0-45-generic
run-parts: executing /etc/kernel/postinst.d/dkms 3.13.0-45-generic /boot/vmlinuz-3.13.0-45-generic
run-parts: executing /etc/kernel/postinst.d/initramfs-tools 3.13.0-45-generic /boot/vmlinuz-3.13.0-45-generic
update-initramfs: Generating /boot/initrd.img-3.13.0-45-generic
grep: /boot/config-3.13.0-45-generic: No such file or directory
depmod: WARNING: could not open /tmp/mkinitramfs_RPFCFw/lib/modules/3.13.0-45-generic/modules.order: No such file or directory
depmod: WARNING: could not open /tmp/mkinitramfs_RPFCFw/lib/modules/3.13.0-45-generic/modules.builtin: No such file or directory
run-parts: executing /etc/kernel/postinst.d/pm-utils 3.13.0-45-generic /boot/vmlinuz-3.13.0-45-generic
run-parts: executing /etc/kernel/postinst.d/update-notifier 3.13.0-45-generic /boot/vmlinuz-3.13.0-45-generic
run-parts: executing /etc/kernel/postinst.d/zz-update-grub 3.13.0-45-generic /boot/vmlinuz-3.13.0-45-generic
Searching for GRUB installation directory ... found: /boot/grub
/etc/default/grub: line 1: If: command not found
run-parts: /etc/kernel/postinst.d/zz-update-grub exited with return code 127
dpkg: error processing package linux-image-extra-3.13.0-45-generic (--remove):
 subprocess installed post-removal script returned error exit status 1
Removing linux-image-3.13.0-45-generic (3.13.0-45.74) ...
Examining /etc/kernel/postrm.d .
run-parts: executing /etc/kernel/postrm.d/initramfs-tools 3.13.0-45-generic /boot/vmlinuz-3.13.0-45-generic
update-initramfs: Deleting /boot/initrd.img-3.13.0-45-generic
run-parts: executing /etc/kernel/postrm.d/zz-update-grub 3.13.0-45-generic /boot/vmlinuz-3.13.0-45-generic
Searching for GRUB installation directory ... found: /boot/grub
/etc/default/grub: line 1: If: command not found
run-parts: /etc/kernel/postrm.d/zz-update-grub exited with return code 127
Failed to process /etc/kernel/postrm.d at /var/lib/dpkg/info/linux-image-3.13.0-45-generic.postrm line 328.
dpkg: error processing package linux-image-3.13.0-45-generic (--remove):
 subprocess installed post-removal script returned error exit status 1
Errors were encountered while processing:
 linux-image-extra-3.13.0-45-generic
 linux-image-3.13.0-45-generic
E: Sub-process /usr/bin/dpkg returned an error code (1)