The following packages were automatically installed and are no longer required:
fonts-horai-umefont git git-man glib-networking:i386 gnome-exe-thumbnailer
gnome-session-canberra i965-va-driver:i386 libasn1-8-heimdal:i386
libatk-bridge2.0-0:i386 libatk1.0-0:i386 libatspi2.0-0:i386
libcairo-gobject2:i386 libcairo2:i386 libcapi20-3 libcapi20-3:i386
libcdr-0.0-0 libcmis-0.4-4 libcolord1:i386 liberror-perl libexif12:i386
libftgl2 libgd3:i386 libgdk-pixbuf2.0-0:i386 libgegl-0.2-0 libgif4:i386
libglu1-mesa:i386 libgphoto2-6:i386 libgphoto2-port10:i386
libgraphite2-3:i386 libgsm1:i386 libgssapi3-heimdal:i386
libgstreamer-plugins-base0.10-0:i386 libgstreamer0.10-0:i386 libgtk-3-0:i386
libharfbuzz0b:i386 libhcrypto4-heimdal:i386 libhdb9-heimdal
libheimbase1-heimdal:i386 libheimntlm0-heimdal:i386 libhx509-5-heimdal:i386
libieee1284-3:i386 libindicate5 libjasper1:i386 libjson-glib-1.0-0:i386
libkdc2-heimdal libkrb5-26-heimdal:i386 liblcms2-2:i386 libldap-2.4-2:i386
libltdl7:i386 libmowgli2 libmpg123-0:i386 libmspub-0.0-0 libnoise-core0
libntdb1 libodbc1:i386 libopenal1:i386 liborcus-0.6-0 libosmesa6
libosmesa6:i386 libp11-kit-gnome-keyring:i386 libpango-1.0-0:i386
libpangocairo-1.0-0:i386 libpangoft2-1.0-0:i386 libpcap0.8:i386
libpixman-1-0:i386 libprojectm2 libproxy1:i386 libqxt-core0 libqxt-gui0
librest-0.7-0:i386 libroken18-heimdal:i386 libsane:i386 libsasl2-2:i386
libsasl2-modules:i386 libsasl2-modules-db:i386 libsdl2-2.0-0
libsoup-gnome2.4-1:i386 libsoup2.4-1:i386 libsqlheavy0.1-0 libtimezonemap1
libusb-1.0-0:i386 libv4l-0:i386 libv4lconvert0:i386 libva-drm1:i386
libva-glx1 libva-x11-1:i386 libva1:i386 libvdpau1:i386 libvisio-0.0-0
libvncclient0 libvpx1:i386 libwayland-client0:i386 libwayland-cursor0:i386
libwind0-heimdal:i386 libwpd-0.9-9 libwpg-0.2-2 libwps-0.2-2 libx265-59
libxcb-render0:i386 libxcb-shm0:i386 libxcomposite1:i386 libxcursor1:i386
libxinerama1:i386 libxkbcommon0:i386 libxpm4:i386 libxrandr2:i386
linux-headers-3.19.0-26 linux-headers-3.19.0-26-generic
linux-image-3.19.0-26-generic linux-image-extra-3.19.0-26-generic
linux-lts-xenial-tools-4.4.0-21 linux-tools-4.4.0-21-generic
ocl-icd-libopencl1:i386 p11-kit-modules:i386 python-ntdb sbsigntool
secureboot-db ttf-dejavu-core va-driver-all:i386 vdpau-va-driver:i386
wine-gecko2.21 wine-gecko2.21:i386 wine-gecko2.34 wine-gecko2.34:i386
wine-mono0.0.8 wine-mono4.5.4 xfonts-mathml
Use 'apt-get autoremove' to remove them.
On a couple of occasions using ubuntu-based systems a similar message with a lot of dependencies incited me to break my system.
secureboot-db
package is installed on my laptop since it is UEFI.The package is not needed for Legacy DOS BIOS systems or if you are booting with CSM or legacy