how do I uninstall sage in Ubuntu 14.04?

edit

It depends on how you installed Sage.

if you installed it from the PPA, the following should work (not tested, please tell us):

sudo apt-get remove sagemath-upstream-binary

If you unpacked a binary from the moirrors or if you compiled the binaries yourself, just remove the directory in which you put Sage.

Also, if you also want to remove your own worksheets and configurations, in both cases you can do:

rm -rf ~/.sage