setup-environment-internal: Remove case where path ends with :
setup-environment-internal: Remove case where path ends with :

This is to avoid foxing bitbake to cry about empty path
since there is nothing after trailing : on path

Change-Id: I24b84565dac9c6d60b505c9003d0840114acb701
Signed-off-by: Khem Raj <729d64b6f67515e258459a5f6d20ec88b2caf8df@gmail.com>

ndechesne/qcom-oe-manifest,96boards/oe-rpb-manifest,koenkooi/angstrom-manifest,Angstrom-distribution/angstrom-manifest,linaro-home/lhg-oe-manifests,twoerner/angstrom-manifest