Revert "Add test that never passes"

This reverts commit 0c07cca.

Author: rishav-karanjit

src/test/java/software/amazon/encryption/s3/S3EncryptionClientBuilderValidationTest.java

@@ -282,11 +282,4 @@ public void testBuilderWithNullKmsKeyId() {
         );
         assertTrue(exception.getMessage().contains("Only one may be set of"));
     }
-
-    // TODO: REMOVE THIS TEST - Demo test to verify retry behavior
-    @RetryingTest(3)
-    public void testRetryDemoAlwaysFails() {
-        System.out.println("Retry attempt made - this test always fails");
-        throw new RuntimeException("Demo test to show retry behavior - REMOVE THIS TEST");
-    }
 }