adriana@adriana-Satellite-L700:~$ sudo dpkg -r linux-headers-3.13.0-37-generic linux-headers-3.13.0-37
(Reading database ... 790710 files and directories currently installed.)
Removing linux-headers-3.13.0-37-generic (3.13.0-37.64) ...
Removing linux-headers-3.13.0-37 (3.13.0-37.64) ...
adriana@adriana-Satellite-L700:~$ sudo dpkg -r linux-headers-3.13.0-38-generic linux-headers-3.13.0-38
dpkg: warning: ignoring request to remove linux-headers-3.13.0-38-generic which isn't installed
dpkg: warning: ignoring request to remove linux-headers-3.13.0-38 which isn't installed

adriana@adriana-Satellite-L700:~$ sudo dpkg -r linux-headers-3.13.0-39-generic linux-headers-3.13.0-39
(Reading database ... 765904 files and directories currently installed.)
Removing linux-headers-3.13.0-39-generic (3.13.0-39.66) ...
Removing linux-headers-3.13.0-39 (3.13.0-39.66) ...
adriana@adriana-Satellite-L700:~$ sudo dpkg -r linux-headers-3.13.0-40-generic linux-headers-3.13.0-40
(Reading database ... 741098 files and directories currently installed.)
Removing linux-headers-3.13.0-40-generic (3.13.0-40.69) ...
Removing linux-headers-3.13.0-40 (3.13.0-40.69) ...