libstdc++: Remove trailing whitespace in some tests

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

libstdc++-v3/ChangeLog:

	* testsuite/20_util/function_objects/binders/3113.cc: Remove
	trailing whitespace.
	* testsuite/20_util/shared_ptr/assign/auto_ptr.cc: Likewise.
	* testsuite/20_util/shared_ptr/assign/auto_ptr_neg.cc: Likewise.
	* testsuite/20_util/shared_ptr/assign/auto_ptr_rvalue.cc:
	Likewise.
	* testsuite/20_util/shared_ptr/creation/dr925.cc: Likewise.
	* testsuite/25_algorithms/headers/algorithm/synopsis.cc:
	Likewise.
	* testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/2.cc:
	Likewise.
	* testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/pod.cc:
	Likewise.
8 files changed