OPENDJ-3417 Remove several backend-related methods from DirectoryServer class

Nicolas Capponi

03.41.2016 aaf1f09351c43d52009c6b53b93eb153ace8428e

 opendj-server-legacy/src/test/java/org/opends/server/replication/GenerationIdTest.java

@@ -490,7 +490,8 @@
    // non persistent data
    LDIFImportConfig importConfig = new LDIFImportConfig(ldifFile.getAbsolutePath());

    MemoryBackend memoryBackend = (MemoryBackend) DirectoryServer.getBackend(TEST_BACKEND_ID);
    MemoryBackend memoryBackend =
        (MemoryBackend) TestCaseUtils.getServerContext().getBackendConfigManager().getLocalBackend(TEST_BACKEND_ID);
    memoryBackend.importLDIF(importConfig, DirectoryServer.getInstance().getServerContext());
  }