util: term, remove install target

util: term, remove install target

Installing the term utility within the host filesystem is an unlikely
scenario. Most times, the utility will be used in place or trivially
copied to a local directory within the PATH.

Furthermore, the install target hardcoded a privileged installation,
which is a non-standard and insecure technique.

Change-Id: I1592a304017c6b24a9421aa353229fb5a5baae43
Signed-off-by: Adrian Herrera <adrian.herrera@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/38415
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>