tests: Remove debug print from ap_wpa2_psk_incorrect_passphrase

This development time debug print was forgotten into the test script.

Signed-off-by: Jouni Malinen <j@w1.fi>
diff --git a/tests/hwsim/test_ap_psk.py b/tests/hwsim/test_ap_psk.py
index 25ad4a0..3fdc0da 100644
--- a/tests/hwsim/test_ap_psk.py
+++ b/tests/hwsim/test_ap_psk.py
@@ -1873,4 +1873,3 @@
     ev = hapd.wait_event(["AP-STA-POSSIBLE-PSK-MISMATCH"], timeout=10)
     if ev is None:
         raise Exception("No AP-STA-POSSIBLE-PSK-MISMATCH reported")
-    print ev