fvp-docker-images/builders.sh: remove exit-or-error flag

Otherwise, the 'type aws' check would make the script fail

Signed-off-by: Leonardo Sandoval <leonardo.sandoval@linaro.org>
Change-Id: I5c9cdcdd6a0e5318653d7479b09af6f1297fdad1
diff --git a/fvp-docker-images/builders.sh b/fvp-docker-images/builders.sh
index 440182a..d5a6ba0 100644
--- a/fvp-docker-images/builders.sh
+++ b/fvp-docker-images/builders.sh
@@ -1,5 +1,4 @@
 #!/bin/bash
-set -e
 
 if ! type aws
 then