Remove symlinks, newt should find packages

Signed-off-by: Fabio Utzig <utzig@apache.org>
diff --git a/ci/mynewt_run.sh b/ci/mynewt_run.sh
index f944f62..c84dccf 100755
--- a/ci/mynewt_run.sh
+++ b/ci/mynewt_run.sh
@@ -20,10 +20,7 @@
 export PATH=$HOME/bin:$PATH
 pwd
 
-ln -s ci/mynewt_targets targets
-ln -s ci/mynewt_keys keys
-
-for target in $(ls targets); do
+for target in $(ls ci/mynewt_targets); do
     newt build $target
     [[ $? -ne 0 ]] && exit 1
 done