Remove reference to directory that doesn't exist

frameworks/support/transition/dummy doesn't exist, don't try to find
java files in it.

Test: m -j
Change-Id: I5c802b3e6e2202f4ee68453493ef30a394521126
obsoleted by
Merged-in: Ia9208246837347ce3d8df4adbe6b0ce406d3844a
1 file changed