These function objects do not need to be adaptable, so stop deriving
from deprecated classes. Also the 'inline' keyword is redundant on
member functions defined in the class body.

Signed-off-by: Jonathan Wakely <jwakely@redhat.com>

libstdc++-v3/ChangeLog:

	* testsuite/ext/pb_ds/example/basic_multimap.cc: Remove
	unnecesary derivation from std::unary_function.
	* testsuite/ext/pb_ds/example/erase_if.cc: Likewise.
	* testsuite/ext/pb_ds/example/hash_illegal_resize.cc: Likewise.
	* testsuite/ext/pb_ds/example/hash_initial_size.cc: Likewise.
	* testsuite/ext/pb_ds/example/hash_load_set_change.cc: Likewise.
	* testsuite/ext/pb_ds/example/hash_mod.cc: Likewise.
	* testsuite/ext/pb_ds/example/hash_resize.cc: Likewise.
	* testsuite/ext/pb_ds/example/hash_shift_mask.cc: Likewise.
	* testsuite/ext/pb_ds/example/priority_queue_dijkstra.cc:
	Likewise.
	* testsuite/ext/pb_ds/example/ranged_hash.cc: Likewise.
	* testsuite/ext/pb_ds/example/store_hash.cc: Likewise.

Tested powerpc64le-linux. Committed to trunk.