When deleting beatmaps, remove their MD5 hashes from the lookup table.

Signed-off-by: Jeffrey Han <itdelatrisu@gmail.com>

src/itdelatrisu/opsu/beatmap/Beatmap.java

@@ -64,6 +64,9 @@ public class Beatmap implements Comparable<Beatmap> {
 	/** The OSU File object associated with this beatmap. */
 	private File file;
 
+	/** MD5 hash of this file. */
+	public String md5Hash;
+
 	/**
 	 * [General]
 	 */
@@ -203,9 +206,6 @@ public class Beatmap implements Comparable<Beatmap> {
 	/** Slider border color. If null, the skin value is used. */
 	public Color sliderBorder;
 
-	/** MD5 hash of this file. */
-	public String md5Hash;
-
 	/**
 	 * [HitObjects]
 	 */