Remove plymouth because who needs it on servers?
Package
You can find built packages on Launchpad. Add following line in your sources.list file:
deb http://ppa.launchpad.net/renard0/utils/ubuntu trusty main
Run:
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 92100D58
sudo apt-get update
sudo apt-get install no-plymouth
Manual installation
Compile:
debuild --no-tgz-check -I.git -i'\.git/' -us -uc
Install:
dpkg -i no-plymouth_1.0_all.deb
dpkg -P plymouth
enjoy!