diff --git a/src/main/java/hudson/plugins/script_realm/ScriptSecurityRealm.java b/src/main/java/hudson/plugins/script_realm/ScriptSecurityRealm.java
deleted file mode 100644
index 8742eff..0000000
--- a/src/main/java/hudson/plugins/script_realm/ScriptSecurityRealm.java
+++ /dev/null
@@ -1,145 +0,0 @@
-/*
- * The MIT License
- *
- * Copyright (c) 2004-2009, Sun Microsystems, Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-package hudson.plugins.script_realm;
-
-import hudson.Extension;
-import hudson.Launcher.LocalLauncher;
-import hudson.model.Descriptor;
-import hudson.security.AbstractPasswordBasedSecurityRealm;
-import hudson.security.GroupDetails;
-import hudson.security.SecurityRealm;
-import hudson.util.QuotedStringTokenizer;
-import hudson.util.StreamTaskListener;
-
-import java.io.IOException;
-import java.io.OutputStream;
-import java.io.StringWriter;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.StringTokenizer;
-import java.util.logging.Level;
-import java.util.logging.Logger;
-
-import org.acegisecurity.AuthenticationException;
-import org.acegisecurity.AuthenticationServiceException;
-import org.acegisecurity.BadCredentialsException;
-import org.acegisecurity.GrantedAuthority;
-import org.acegisecurity.GrantedAuthorityImpl;
-import org.acegisecurity.userdetails.User;
-import org.acegisecurity.userdetails.UserDetails;
-import org.acegisecurity.userdetails.UsernameNotFoundException;
-import org.apache.commons.io.output.ByteArrayOutputStream;
-import org.apache.commons.io.output.NullOutputStream;
-import org.apache.commons.lang.StringUtils;
-import org.kohsuke.stapler.DataBoundConstructor;
-import org.springframework.dao.DataAccessException;
-
-/**
- * @author Kohsuke Kawaguchi
- */
-public class ScriptSecurityRealm extends AbstractPasswordBasedSecurityRealm {
-	private static final Logger LOGGER = Logger.getLogger(ScriptSecurityRealm.class.getName());
-
-	public final String commandLine;
-	public final String groupsCommandLine;
-	public final String groupsDelimiter;
-
-	@DataBoundConstructor
-	public ScriptSecurityRealm(String commandLine, String groupsCommandLine, String groupsDelimiter) {
-		this.commandLine = commandLine;
-		this.groupsCommandLine = groupsCommandLine;
-		if (StringUtils.isBlank(groupsDelimiter)) {
-			this.groupsDelimiter = ",";
-		} else {
-			this.groupsDelimiter = groupsDelimiter;
-		}
-	}
-
-	protected UserDetails authenticate(String username, String password) throws AuthenticationException {
-		try {
-			StringWriter out = new StringWriter();
-			LocalLauncher launcher = new LocalLauncher(new StreamTaskListener(out));
-			if (launcher.launch().cmds(QuotedStringTokenizer.tokenize(commandLine)).stdout(new NullOutputStream()).envs("U=" + username, "P=" + password)
-					.join() != 0) {
-				throw new BadCredentialsException(out.toString());
-			}
-			GrantedAuthority[] groups = loadGroups(username);
-			return new User(username, "", true, true, true, true, groups);
-		} catch (InterruptedException e) {
-			throw new AuthenticationServiceException("Interrupted", e);
-		} catch (IOException e) {
-			throw new AuthenticationServiceException("Failed", e);
-		}
-	}
-
-	public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException, DataAccessException {
-		GrantedAuthority[] groups = loadGroups(username);
-		return new User(username, "", true, true, true, true, groups);
-	}
-
-	@Override
-	public GroupDetails loadGroupByGroupname(final String groupname) throws UsernameNotFoundException, DataAccessException {
-		return new GroupDetails() {
-			public String getName() {
-				return groupname;
-			}
-		};
-	}
-
-	@Extension
-	public static final class DescriptorImpl extends Descriptor<SecurityRealm> {
-		public String getDisplayName() {
-			return "Authenticate via custom script";
-		}
-	}
-
-	protected GrantedAuthority[] loadGroups(String username) throws AuthenticationException {
-		try {
-			List<GrantedAuthority> authorities = new ArrayList<GrantedAuthority>();
-			authorities.add(AUTHENTICATED_AUTHORITY);
-			if (!StringUtils.isBlank(groupsCommandLine)) {
-				StringWriter out = new StringWriter();
-				LocalLauncher launcher = new LocalLauncher(new StreamTaskListener(out));
-				OutputStream scriptOut = new ByteArrayOutputStream();
-				if (launcher.launch().cmds(QuotedStringTokenizer.tokenize(groupsCommandLine)).stdout(scriptOut).envs("U=" + username).join() == 0) {
-					StringTokenizer tokenizer = new StringTokenizer(scriptOut.toString().trim(), groupsDelimiter);
-					while (tokenizer.hasMoreTokens()) {
-						final String token = tokenizer.nextToken().trim();
-						String[] args = new String[] { token, username };
-						LOGGER.log(Level.FINE, "granting: {0} to {1}", args);
-						authorities.add(new GrantedAuthorityImpl(token));
-					}
-
-				} else {
-					throw new BadCredentialsException(out.toString());
-				}
-			}
-			return authorities.toArray(new GrantedAuthority[0]);
-		} catch (InterruptedException e) {
-			throw new AuthenticationServiceException("Interrupted", e);
-		} catch (IOException e) {
-			throw new AuthenticationServiceException("Failed", e);
-		}
-	}
-}