remove unused messagehub.login jar file (#374)

source releases cannot contain jar files.  Since we are not currently
running any of the test cases, the simplest path forward is to just
remove the jar file that is only needed for running tests against IBM
diff --git a/tests/libs/messagehub.login-1.0.0.jar b/tests/libs/messagehub.login-1.0.0.jar
deleted file mode 100644
index 00ae55b..0000000
--- a/tests/libs/messagehub.login-1.0.0.jar
+++ /dev/null
Binary files differ