test: do not load absolute path crypto engines twice

Newer versions of OpenSSL now throws an error if an engine is loaded
twice by its absolute path (a second load by its id appears to be okay).

test/parallel/test-crypto-engine.js

@@ -44,10 +44,13 @@ crypto.setEngine('dynamic', crypto.constants.ENGINE_METHOD_RSA);
     fs.accessSync(enginePath);
 
     crypto.setEngine(enginePath);
-    crypto.setEngine(enginePath);
+    // OpenSSL 3.0.1 and 1.1.1m now throw errors if an engine is loaded again
+    // with a duplicate absolute path.
+    // TODO(richardlau): figure out why this fails on macOS but not Linux.
+    // crypto.setEngine(enginePath);
 
-    crypto.setEngine(enginePath, crypto.constants.ENGINE_METHOD_RSA);
-    crypto.setEngine(enginePath, crypto.constants.ENGINE_METHOD_RSA);
+    // crypto.setEngine(enginePath, crypto.constants.ENGINE_METHOD_RSA);
+    // crypto.setEngine(enginePath, crypto.constants.ENGINE_METHOD_RSA);
 
     process.env.OPENSSL_ENGINES = execDir;