spotbugs: Unused public or protected field

Signed-off-by: Andy Scherzinger <info@andy-scherzinger.de>

src/main/java/com/owncloud/android/operations/CreateShareWithShareeOperation.java

@@ -42,8 +42,6 @@ import lombok.Getter;
  */
 public class CreateShareWithShareeOperation extends SyncOperation {
 
-    protected FileDataStorageManager mStorageManager;
-
     @Getter private String path;
     private String shareeName;
     private ShareType shareType;