Fix pkg.yml duplicated key in crash_test

Author: m-gorecki

.github/newt_dump/proj/repos/apache-mynewt-core/test/crash_test/pkg.yml

@@ -28,8 +28,6 @@ pkg.req_apis.CRASH_TEST_CLI:
     - console
 pkg.deps.CRASH_TEST_NEWTMGR:
     - "@apache-mynewt-core/mgmt/mgmt"
-
-pkg.deps.CRASH_TEST_NEWTMGR:
     - "@apache-mynewt-core/encoding/json"
 
 pkg.init: