How to disable the Alfresco community footer
Although it is not advised to change the footer unless you are compiling Alfresco from source, here is a neat way to hide the footer without modifying the any .jar files
All you need to do is visit the following location:
<Alfresco>/tomcat/webapps/share/components/footer
[<Alfresco> is the location of your Alfresco program folder - usually /opt/alfresco<version>]
cd tomcat/webapps/share/components/footer
copy the footer.css file
cp footer.css footer.css.original
Edit the footer.css file
vi footer.css
add the following line after the .footer { and .footer-com .copyright {
display:none!important;
Save the file and that's about it
Nothing to modify, reboot or break :)