Remove extra shift in --create-runner handler in run-test

run-test --create-runner would eat an argument due to an extra shift.
Remove this shift.

Test: ./test/run-test --create-runner --jit --host 001-HelloWorld
      examine output.

Change-Id: Id8676fc90aa841d130437174e5958f29b9062311
diff --git a/test/run-test b/test/run-test
index 707d93f..188b38f 100755
--- a/test/run-test
+++ b/test/run-test
@@ -372,7 +372,6 @@
         never_clean="yes"
         create_runner="yes"
         shift
-        shift
     elif [ "x$1" = "x--dev" ]; then
         run_args+=(--dev)
         dev_mode="yes"