Move deobfuscation methods to their own files

src/main/java/info/sigterm/deob/deobfuscators/UnusedMethods.java

@@ -0,0 +1,34 @@
+package info.sigterm.deob.deobfuscators;
+
+import info.sigterm.deob.ClassFile;
+import info.sigterm.deob.ClassGroup;
+import info.sigterm.deob.Method;
+
+import java.util.ArrayList;
+
+public class UnusedMethods
+{
+	public void run(ClassGroup group)
+	{
+		group.buildCallGraph();
+		
+		int i = 0;
+		for (ClassFile cf : group.getClasses())
+		{
+			for (Method m : new ArrayList<>(cf.getMethods().getMethods()))
+			{
+				/* assume obfuscated names are <= 2 chars */
+				if (m.getName().length() > 2)
+					continue;
+				
+				if (!m.isUsed())
+				{
+					cf.getMethods().removeMethod(m);
+					++i;
+				}
+			}
+		}
+		
+		System.out.println("Removed " + i + " methods");
+	}
+}