Fix various warnings

Remove unused imports, unused fields and variables, unused private
methods and unnecessary @SuppressWarnings.

Change-Id: Iff3dbd9e2669fcaa7cb42c1accfddfb2ba82b6e0
Signed-off-by: Edwin Kempin <edwin.kempin@sap.com>

gerrit-cache-h2/src/main/java/com/google/gerrit/server/cache/h2/H2CacheFactory.java

@@ -146,7 +146,7 @@ class H2CacheFactory implements PersistentCacheFactory, LifecycleListener {
     }
   }
 
-  @SuppressWarnings({"unchecked", "rawtypes", "cast"})
+  @SuppressWarnings({"unchecked", "cast"})
   @Override
   public <K, V> Cache<K, V> build(CacheBinding<K, V> def) {
     Preconditions.checkState(!started, "cache must be built before start");

gerrit-common/src/main/java/com/google/gerrit/common/data/PatchSetPublishDetail.java

@@ -19,7 +19,6 @@ import com.google.gerrit.reviewdb.client.Change;
 import com.google.gerrit.reviewdb.client.PatchLineComment;
 import com.google.gerrit.reviewdb.client.PatchSetApproval;
 import com.google.gerrit.reviewdb.client.PatchSetInfo;
-import com.google.gerrit.reviewdb.client.Project;
 
 import java.util.ArrayList;
 import java.util.Collection;

gerrit-extension-api/src/main/java/com/google/gerrit/extensions/registration/DynamicSetProvider.java

@@ -19,7 +19,6 @@ import com.google.inject.Inject;
 import com.google.inject.Injector;
 import com.google.inject.Provider;
 import com.google.inject.TypeLiteral;
-import com.google.inject.internal.UniqueAnnotations;
 
 import java.util.ArrayList;
 import java.util.Collections;
@@ -27,8 +26,6 @@ import java.util.List;
 import java.util.concurrent.atomic.AtomicReference;
 
 class DynamicSetProvider<T> implements Provider<DynamicSet<T>> {
-  private static final Class<?> UNIQUE_ANNOTATION =
-      UniqueAnnotations.create().getClass();
   private final TypeLiteral<T> type;
 
   @Inject

gerrit-gwtui/src/main/java/com/google/gerrit/client/changes/ChangeDescriptionBlock.java

@@ -18,7 +18,6 @@ import com.google.gerrit.common.data.AccountInfoCache;
 import com.google.gerrit.common.data.SubmitTypeRecord;
 import com.google.gerrit.reviewdb.client.Change;
 import com.google.gerrit.reviewdb.client.PatchSetInfo;
-import com.google.gerrit.reviewdb.client.Project;
 import com.google.gwt.user.client.ui.Composite;
 import com.google.gwt.user.client.ui.HorizontalPanel;
 import com.google.gwtexpui.globalkey.client.KeyCommandSet;

gerrit-server/src/main/java/com/google/gerrit/server/events/EventFactory.java

@@ -51,7 +51,6 @@ import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
 import java.util.Map;
-import java.util.List;
 
 import javax.annotation.Nullable;
 

gerrit-server/src/main/java/com/google/gerrit/server/git/ChangeMergeQueue.java

@@ -89,7 +89,6 @@ public class ChangeMergeQueue implements MergeQueue {
         });
       }
 
-      @SuppressWarnings("unused")
       @Provides
       public PerThreadRequestScope.Scoper provideScoper(
           final PerThreadRequestScope.Propagator propagator) {

gerrit-server/src/main/java/com/google/gerrit/server/query/QueryRewriter.java

@@ -478,28 +478,6 @@ public abstract class QueryRewriter<T> {
     return r;
   }
 
-  private static <T> void expand(final List<Predicate<T>> out,
-      final List<Predicate<T>> allOR, final List<Predicate<T>> tmp,
-      final List<Predicate<T>> nonOR) {
-    if (tmp.size() == allOR.size()) {
-      final int sz = nonOR.size() + tmp.size();
-      final List<Predicate<T>> newList = new ArrayList<Predicate<T>>(sz);
-      newList.addAll(nonOR);
-      newList.addAll(tmp);
-      out.add(Predicate.and(newList));
-
-    } else {
-      for (final Predicate<T> c : allOR.get(tmp.size()).getChildren()) {
-        try {
-          tmp.add(c);
-          expand(out, allOR, tmp, nonOR);
-        } finally {
-          tmp.remove(tmp.size() - 1);
-        }
-      }
-    }
-  }
-
   private static <T> boolean isAND(final Predicate<T> p) {
     return p instanceof AndPredicate;
   }

gerrit-server/src/main/java/com/google/gerrit/server/query/change/QueryProcessor.java

@@ -274,7 +274,6 @@ public class QueryProcessor {
           if (includeSubmitRecords) {
             PatchSet.Id psId = d.getChange().currentPatchSetId();
             PatchSet patchSet = db.get().patchSets().get(psId);
-            Change.Id changeId = psId.getParentKey();
             List<SubmitRecord> submitResult = d.changeControl().canSubmit( //
                 db.get(), patchSet, null, false, true);
             eventFactory.addSubmitRecords(c, submitResult);

gerrit-sshd/src/main/java/com/google/gerrit/sshd/BaseCommand.java

@@ -62,7 +62,6 @@ public abstract class BaseCommand implements Command {
   static final int STATUS_NOT_FOUND = PRIVATE_STATUS | 2;
   public static final int STATUS_NOT_ADMIN = PRIVATE_STATUS | 3;
 
-  @SuppressWarnings("unused")
   @Option(name = "--", usage = "end of options", handler = EndOfOptionsHandler.class)
   private boolean endOfOptions;