HHH-13682 Do not set net.bytebuddy.experimental=true in tests anymore

It's no longer necessary since we upgraded to byte-buddy 1.10.2,
and it causes bytecode to be converted from Java 14 to Java 12 in some
cases (I don't know why).

gradle/java-module.gradle

@@ -208,18 +208,6 @@ processTestResources {
 	}
 }
 
-// Enable the experimental features of ByteBuddy with JDK 12+
-test {
-	//Only safe to attempt to parse the version as an integer since JDK11
-	if ( JavaVersion.current().isJava11Compatible() ) {
-		int majorJVMVersionInt = Integer.valueOf(JavaVersion.current().toString());
-		//Set the -Dnet.bytebuddy.experimental=true property only when we need it:
-		if (majorJVMVersionInt >= 12) {
-			systemProperty 'net.bytebuddy.experimental', true
-		}
-	}
-}
-
 test {
 	if ( project.findProperty( 'log-test-progress' )?.toString()?.toBoolean() ) {
 		// Log a statement for each test.