Java: Update expected test output. Generated models are no longer applied as there exist a source implementation.

Author: michaelnebel

java/ql/test/library-tests/dataflow/external-models/steps.expected

@@ -8,6 +8,4 @@ invalidModelRow
 | C.java:20:5:20:8 | this | C.java:20:5:20:22 | stepQualRes(...) |
 | C.java:21:5:21:17 | this <.method> | C.java:21:5:21:17 | stepQualRes(...) |
 | C.java:24:5:24:23 | this <.method> | C.java:24:17:24:22 | argOut [post update] |
-| C.java:29:25:29:28 | arg1 | C.java:29:5:29:29 | stepArgResGenerated(...) |
 | C.java:34:38:34:41 | arg2 | C.java:34:5:34:42 | stepArgResGeneratedIgnored(...) |
-| C.java:36:26:36:29 | arg1 | C.java:36:5:36:30 | this <.method> [post update] |