ConfigUtil: Remove unused private methods

Change-Id: Iccd275b33b536b9be4a3aaff674fac7f4a5e8531

gitiles-servlet/src/main/java/com/google/gitiles/ConfigUtil.java

diff --git a/gitiles-servlet/src/main/java/com/google/gitiles/ConfigUtil.java b/gitiles-servlet/src/main/java/com/google/gitiles/ConfigUtil.java
index 05665c7..0c7c942 100644
--- a/gitiles-servlet/src/main/java/com/google/gitiles/ConfigUtil.java
+++ b/gitiles-servlet/src/main/java/com/google/gitiles/ConfigUtil.java
@@ -17,14 +17,9 @@
 import static java.util.concurrent.TimeUnit.MILLISECONDS;
 
 import com.google.common.base.Optional;
-import com.google.common.base.Predicates;
 import com.google.common.cache.CacheBuilder;
-import com.google.common.collect.ImmutableList;
-import com.google.common.collect.Iterables;
 import java.util.TimeZone;
 import java.util.concurrent.TimeUnit;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
 import javax.annotation.Nullable;
 import org.eclipse.jgit.lib.Config;
 import org.joda.time.Duration;
@@ -104,13 +99,5 @@
     return id != null ? Optional.of(TimeZone.getTimeZone(id)) : Optional.<TimeZone>absent();
   }
 
-  private static Matcher matcher(String pattern, String valStr) {
-    return Pattern.compile(pattern).matcher(valStr);
-  }
-
-  private static boolean anyOf(String a, String... cases) {
-    return Iterables.any(ImmutableList.copyOf(cases), Predicates.equalTo(a.toLowerCase()));
-  }
-
   private ConfigUtil() {}
 }