Deprecate FileUtils.closeQuietly

This API encourages swallowing errors, and the code to implement it is trivial if apps still want to do it themselves.
Guava's reasoning on deprecating their version of this API:
https://github.com/google/guava/issues/1118

Test: No behavior changes
Bug: 144042891
Change-Id: Ic4cfb7366c65d49c355479f420d9ba4fc1b3f053