clone.sh: remove clone parameters on git-clone command

The removal allows git to clone and checkout the master branch with
full repository history, which is then used for diffing changes
between user and master branches, allowing static checks to run as
expected.

Fixes [1]

[1] https://linaro.atlassian.net/browse/TFC-177

Signed-off-by: Leonardo Sandoval <leonardo.sandoval@linaro.org>
Change-Id: I0bc34490818dd548e7d4694730151ff90dfc0c94
1 file changed