tests/kms_psr_sink_crc: Save runtime by not waiting in crc function

The get_sink_crc function usleep(300000) with motivation:
"Now give a time for human eyes". However, the function has already
exited early on igt_interactive_debug, so no human is waiting.
Also, waiting for keypress is obsolete when not in
igt_interactive_debug mode.

Signed-off-by: Marta Lofstedt <marta.lofstedt@intel.com>
Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
diff --git a/tests/kms_psr_sink_crc.c b/tests/kms_psr_sink_crc.c
index 2b60acf..98d29ba 100644
--- a/tests/kms_psr_sink_crc.c
+++ b/tests/kms_psr_sink_crc.c
@@ -236,12 +236,6 @@
 	close(dir);
 
 	igt_debug("%s\n", crc);
-	igt_debug_wait_for_keypress("crc");
-
-	/* The important value was already taken.
-	 * Now give a time for human eyes
-	 */
-	usleep(300000);
 
 	/* Black screen is always invalid */
 	igt_assert(strncmp(crc, CRC_BLACK, CRC_LEN) != 0);