SF: do not extend DisplayDevice lifetime

DisplayDevice lifetime was extended, resulting in stack corruption
due to lifetime issue

Fixes: 135211720
Test: 1h45m continual rotation with PIP video playing without crashing
Test: Functional testing to make sure b/132394665 is still fixed.
Change-Id: I1c4b3946a6da7994ff442a2345c1c878aa899ee4