Remove TF-M build folder before creating

Though on CI environments this is not needed because we start from a
clean workspace, on local machines may cause some trouble if build
build folder already exists, so remove the latter before creating it
again.

Change-Id: I5be60665067c927aebde662e7912d3ffe6261ef2
Signed-off-by: Leonardo Sandoval <leonardo.sandoval@linaro.org>
1 file changed