folio-compat: remove try_to_release_page()

There are no more callers of try_to_release_page(), so remove it.  This
saves 85 bytes of kernel text.

Link: https://lkml.kernel.org/r/20221118073055.55694-5-vishal.moola@gmail.com


Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Naoya Horiguchi <naoya.horiguchi@nec.com>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>