removed unused code [ci skip]

main/filesystem-crypto/src/main/java/org/cryptomator/crypto/fs/CryptoFileSystem.java

@@ -18,12 +18,9 @@ import org.cryptomator.filesystem.Folder;
 import org.cryptomator.filesystem.FolderCreateMode;
 import org.cryptomator.filesystem.ReadableFile;
 import org.cryptomator.filesystem.WritableFile;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 public class CryptoFileSystem extends CryptoFolder implements FileSystem {
 
-	private static final Logger LOG = LoggerFactory.getLogger(CryptoFileSystem.class);
 	private static final String DATA_ROOT_DIR = "d";
 	private static final String ROOT_DIR_FILE = "root";
 	private static final String MASTERKEY_FILENAME = "masterkey.cryptomator";

main/filesystem-inmemory/src/test/java/org/cryptomator/filesystem/inmem/InMemoryFileSystemTest.java

@@ -11,7 +11,6 @@ package org.cryptomator.filesystem.inmem;
 import java.io.UncheckedIOException;
 import java.nio.ByteBuffer;
 import java.time.Instant;
-import java.util.concurrent.TimeUnit;
 import java.util.concurrent.TimeoutException;
 
 import org.cryptomator.filesystem.File;

main/filesystem-nameshortening/src/test/java/org/cryptomator/shortening/ShorteningFileSystemTest.java

@@ -3,7 +3,6 @@ package org.cryptomator.shortening;
 import java.io.UncheckedIOException;
 import java.nio.ByteBuffer;
 import java.time.Instant;
-import java.util.concurrent.TimeUnit;
 import java.util.concurrent.TimeoutException;
 
 import org.cryptomator.filesystem.File;