Remove unused @test annotation from getBuilder method

Author: GoeLin

test/langtools/jdk/jshell/IdGeneratorTest.java

@@ -44,7 +44,6 @@
 
 public class IdGeneratorTest {
 
-    @Test
     public JShell.Builder getBuilder() {
         TestingInputStream inStream = new TestingInputStream();
         ByteArrayOutputStream outStream = new ByteArrayOutputStream();