Revert changes to acc_prof-init-1.c and acc_prof-parallel-1.c

Revert changes to acc_prof-init-1.c and acc_prof-parallel-1.c

There is an interaction between the commits "OpenACC profiling-interface
fixes for asynchronous operations" and "[OpenACC] Clarify sequencing of
'async' data copying vs. profiling events in
'libgomp.oacc-c-c++-common/acc_prof-{init,parallel}-1.c'", leading to an
execution test failure and hang in these two tests.

This reverts changes to the tests made by the second patch, allowing the
tests to pass.

2022-05-30  Kwok Cheung Yeung  <kcy@codesourcery.com>

	libgomp/
	* testsuite/libgomp.oacc-c-c++-common/acc_prof-init-1.c
	(cb_compute_construct_end): Remove COPYIN block.
	(main): Remove assignments to acc_async.
	* testsuite/libgomp.oacc-c-c++-common/acc_prof-parallel-1.c
	(cb_enter_data_end): Remove COPYIN block.
	(main): Remove assignment to acc_async.