8250669: Running JMH micros is broken after JDK-8248135

Reviewed-by: ecaspole, erikj

make/test/BuildMicrobenchmark.gmk

@@ -90,11 +90,10 @@ $(eval $(call SetupJavaCompilation, BUILD_JDK_MICROBENCHMARK, \
     TARGET_RELEASE := $(TARGET_RELEASE_NEWJDK_UPGRADED), \
     SMALL_JAVA := false, \
     CLASSPATH := $(MICROBENCHMARK_CLASSPATH), \
-    DISABLED_WARNINGS := processing rawtypes cast serial preview, \
+    DISABLED_WARNINGS := processing rawtypes cast serial, \
     SRC := $(MICROBENCHMARK_SRC), \
     BIN := $(MICROBENCHMARK_CLASSES), \
     JAVA_FLAGS := --add-modules jdk.unsupported --limit-modules java.management, \
-    JAVAC_FLAGS := --enable-preview, \
 ))
 
 $(BUILD_JDK_MICROBENCHMARK): $(JMH_COMPILE_JARS)

test/micro/org/openjdk/bench/java/io/RecordDeserialization.java

@@ -82,7 +82,7 @@ import java.util.stream.IntStream;
 @Measurement(iterations = 10, time = 1)
 @OutputTimeUnit(TimeUnit.MICROSECONDS)
 @State(Scope.Thread)
-@Fork(value = 1, warmups = 0, jvmArgsAppend = "--enable-preview")
+@Fork(value = 1, warmups = 0)
 public class RecordDeserialization {
 
     public record PointR(int x, int y) implements Serializable {}