Remove unused Logger instances

Change-Id: I2540e90202044f2dd7a982f2f0b2ee3482fa2455
diff --git a/java/com/google/gitiles/HostIndexServlet.java b/java/com/google/gitiles/HostIndexServlet.java
index 15ad75d..d64fc07 100644
--- a/java/com/google/gitiles/HostIndexServlet.java
+++ b/java/com/google/gitiles/HostIndexServlet.java
@@ -37,13 +37,10 @@
 import javax.servlet.http.HttpServletResponse;
 import org.eclipse.jgit.transport.resolver.ServiceNotAuthorizedException;
 import org.eclipse.jgit.transport.resolver.ServiceNotEnabledException;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 /** Serves the top level index page for a Gitiles host. */
 public class HostIndexServlet extends BaseServlet {
   private static final long serialVersionUID = 1L;
-  private static final Logger log = LoggerFactory.getLogger(HostIndexServlet.class);
 
   protected final GitilesUrls urls;
 
diff --git a/java/com/google/gitiles/LogServlet.java b/java/com/google/gitiles/LogServlet.java
index 3523846..a91aeab 100644
--- a/java/com/google/gitiles/LogServlet.java
+++ b/java/com/google/gitiles/LogServlet.java
@@ -60,13 +60,10 @@
 import org.eclipse.jgit.treewalk.filter.PathFilterGroup;
 import org.eclipse.jgit.treewalk.filter.TreeFilter;
 import org.eclipse.jgit.util.StringUtils;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 /** Serves an HTML page with a shortlog for commits and paths. */
 public class LogServlet extends BaseServlet {
   private static final long serialVersionUID = 1L;
-  private static final Logger log = LoggerFactory.getLogger(LogServlet.class);
 
   static final String LIMIT_PARAM = "n";
   static final String START_PARAM = "s";
diff --git a/java/com/google/gitiles/PathServlet.java b/java/com/google/gitiles/PathServlet.java
index dac38d3..34e0a76 100644
--- a/java/com/google/gitiles/PathServlet.java
+++ b/java/com/google/gitiles/PathServlet.java
@@ -60,14 +60,11 @@
 import org.eclipse.jgit.util.QuotedString;
 import org.eclipse.jgit.util.RawParseUtils;
 import org.eclipse.jgit.util.StringUtils;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 /** Serves an HTML page with detailed information about a path within a tree. */
 // TODO(dborowitz): Handle non-UTF-8 names.
 public class PathServlet extends BaseServlet {
   private static final long serialVersionUID = 1L;
-  private static final Logger log = LoggerFactory.getLogger(PathServlet.class);
 
   static final String MODE_HEADER = "X-Gitiles-Path-Mode";
   static final String TYPE_HEADER = "X-Gitiles-Object-Type";
diff --git a/java/com/google/gitiles/RevisionServlet.java b/java/com/google/gitiles/RevisionServlet.java
index 8bf661f..e46d25b 100644
--- a/java/com/google/gitiles/RevisionServlet.java
+++ b/java/com/google/gitiles/RevisionServlet.java
@@ -49,8 +49,6 @@
 import org.eclipse.jgit.revwalk.RevTag;
 import org.eclipse.jgit.revwalk.RevTree;
 import org.eclipse.jgit.revwalk.RevWalk;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 /** Serves an HTML page with detailed information about a ref. */
 public class RevisionServlet extends BaseServlet {
@@ -60,7 +58,6 @@
       Field.setOf(CommitJsonData.DEFAULT_FIELDS, Field.DIFF_TREE);
 
   private static final long serialVersionUID = 1L;
-  private static final Logger log = LoggerFactory.getLogger(RevisionServlet.class);
 
   private final Linkifier linkifier;
 
diff --git a/java/com/google/gitiles/RootedDocServlet.java b/java/com/google/gitiles/RootedDocServlet.java
index bf72b32..8f021e6 100644
--- a/java/com/google/gitiles/RootedDocServlet.java
+++ b/java/com/google/gitiles/RootedDocServlet.java
@@ -33,12 +33,9 @@
 import org.eclipse.jgit.transport.resolver.RepositoryResolver;
 import org.eclipse.jgit.transport.resolver.ServiceNotAuthorizedException;
 import org.eclipse.jgit.transport.resolver.ServiceNotEnabledException;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 /** Serves Markdown at the root of a host. */
 public class RootedDocServlet extends HttpServlet {
-  private static final Logger log = LoggerFactory.getLogger(ViewFilter.class);
   private static final long serialVersionUID = 1L;
   public static final String BRANCH = "refs/heads/md-pages";
 
diff --git a/java/com/google/gitiles/ViewFilter.java b/java/com/google/gitiles/ViewFilter.java
index 590e583..f400ff0 100644
--- a/java/com/google/gitiles/ViewFilter.java
+++ b/java/com/google/gitiles/ViewFilter.java
@@ -28,12 +28,9 @@
 import javax.servlet.http.HttpServletResponse;
 import org.eclipse.jgit.http.server.ServletUtils;
 import org.eclipse.jgit.http.server.glue.WrappedRequest;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 /** Filter to parse URLs and convert them to {@link GitilesView}s. */
 public class ViewFilter extends AbstractHttpFilter {
-  private static final Logger log = LoggerFactory.getLogger(ViewFilter.class);
   // TODO(dborowitz): Make this public in JGit (or implement getRegexGroup
   // upstream).
   private static final String REGEX_GROUPS_ATTRIBUTE =
diff --git a/java/com/google/gitiles/doc/DocServlet.java b/java/com/google/gitiles/doc/DocServlet.java
index 5b5c663..981f548 100644
--- a/java/com/google/gitiles/doc/DocServlet.java
+++ b/java/com/google/gitiles/doc/DocServlet.java
@@ -53,11 +53,8 @@
 import org.eclipse.jgit.revwalk.RevTree;
 import org.eclipse.jgit.revwalk.RevWalk;
 import org.eclipse.jgit.treewalk.TreeWalk;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 public class DocServlet extends BaseServlet {
-  private static final Logger log = LoggerFactory.getLogger(DocServlet.class);
   private static final long serialVersionUID = 1L;
 
   private static final String INDEX_MD = "index.md";