Clean up methods superseded by StorageStatus class

Relates to #20

ATxCommon/FsUtils.cs

 using System;
-using System.Collections.Generic;
 using System.Globalization;
 using System.IO;
 using System.Linq;
@@ -88,67 +87,6 @@ namespace ATxCommon
             return (baseTime - dirTimestamp).Days;
         }
 
-        /// <summary>
-        /// Assemble a dictionary with information about expired directories.
-        /// </summary>
-        /// <param name="baseDir">The base directory to scan for subdirectories.</param>
-        /// <param name="thresh">The number of days used as expiration threshold.</param>
-        /// <returns>A dictionary having usernames as keys (of those users that actually do have
-        /// expired directories), where the values are lists of tuples with the DirInfo objects,
-        /// size (in bytes) and age (in days) of the expired directories.</returns>
-        public static Dictionary<string, List<Tuple<DirectoryInfo, long, int>>>
-            ExpiredDirs(DirectoryInfo baseDir,int thresh) {
-
-            var collection = new Dictionary<string, List<Tuple<DirectoryInfo, long, int>>>();
-            var now = DateTime.Now;
-            foreach (var userdir in baseDir.GetDirectories()) {
-                var expired = new List<Tuple<DirectoryInfo, long, int>>();
-                foreach (var subdir in userdir.GetDirectories()) {
-                    var age = DirNameToAge(subdir, now);
-                    if (age < thresh)
-                        continue;
-                    long size = -1;
-                    try {
-                        size = GetDirectorySize(subdir.FullName);
-                    }
-                    catch (Exception ex) {
-                        Log.Error("ERROR getting directory size of [{0}]: {1}",
-                            subdir.FullName, ex.Message);
-                    }
-                    expired.Add(new Tuple<DirectoryInfo, long, int>(subdir, size, age));
-                }
-                if (expired.Count > 0)
-                    collection.Add(userdir.Name, expired);
-            }
-            return collection;
-        }
-
-        /// <summary>
-        /// Generate a report on expired folders in the grace location.
-        /// 
-        /// Check all user-directories in the grace location for subdirectories whose timestamp
-        /// (the directory name) exceeds the configured grace period and generate a summary
-        /// containing the age and size of those directories.
-        /// </summary>
-        /// <param name="graceLocation">The location to scan for expired folders.</param>
-        /// <param name="threshold">The number of days used as expiration threshold.</param>
-        public static string GraceLocationSummary(DirectoryInfo graceLocation, int threshold) {
-            var expired = ExpiredDirs(graceLocation, threshold);
-            var report = "";
-            foreach (var userdir in expired.Keys) {
-                report += "\n - user '" + userdir + "'\n";
-                foreach (var subdir in expired[userdir]) {
-                    report += string.Format("   - {0} [age: {2}, size: {1}]\n",
-                        subdir.Item1, Conv.BytesToString(subdir.Item2),
-                        TimeUtils.DaysToHuman(subdir.Item3));
-                }
-            }
-            if (string.IsNullOrEmpty(report))
-                return "";
-
-            return "Expired folders in grace location:\n" + report;
-        }
-
         /// <summary>
         /// Check if a given directory is empty. If a marker file is set in the config a
         /// file with this name will be created inside the given directory and will be