Revert "Temporarily break a handful of tests."

This reverts commit a921d550d03361353468f5d91d552d09ae92a60f.
diff --git a/ssl/test/runner/runner.go b/ssl/test/runner/runner.go
index f9884c0..0b631e2 100644
--- a/ssl/test/runner/runner.go
+++ b/ssl/test/runner/runner.go
@@ -1607,7 +1607,7 @@
 					MaxVersion:           ver.version,
 					CipherSuites:         []uint16{suite.id},
 					Certificates:         []Certificate{cert},
-					PreSharedKey:         []byte("WRONG PSK"),
+					PreSharedKey:         []byte(psk),
 					PreSharedKeyIdentity: pskIdentity,
 				},
 				flags:         flags,