Remove unnecissary test for directoryTransferMaxConcurrency default value

Signed-off-by: Andre Kurait <akurait@amazon.com>

Author: AndreKurait

services-custom/s3-transfer-manager/src/test/java/software/amazon/awssdk/transfer/s3/internal/TransferManagerConfigurationTest.java

@@ -75,12 +75,6 @@ public void directoryTransferMaxConcurrency_customValue_shouldBeStored() {
         assertThat(transferManagerConfiguration.option(DIRECTORY_TRANSFER_MAX_CONCURRENCY)).isEqualTo(50);
     }
 
-    @Test
-    public void directoryTransferMaxConcurrency_noOverride_shouldUseDefault() {
-        transferManagerConfiguration = TransferManagerConfiguration.builder().build();
-        assertThat(transferManagerConfiguration.option(DIRECTORY_TRANSFER_MAX_CONCURRENCY)).isEqualTo(100);
-    }
-
     @Test
     public void close_noCustomExecutor_shouldCloseDefaultOne() {
         transferManagerConfiguration = TransferManagerConfiguration.builder().build();