Remove unnecessary imports

Change-Id: Iaa86c0d4d893a1eb6f114275c35ff830fb2b7fff

gerrit-patch-jgit/src/main/java/org/eclipse/jgit/internal/storage/file/WindowCacheStatAccessor.java

diff --git a/gerrit-patch-jgit/src/main/java/org/eclipse/jgit/internal/storage/file/WindowCacheStatAccessor.java b/gerrit-patch-jgit/src/main/java/org/eclipse/jgit/internal/storage/file/WindowCacheStatAccessor.java
index f241daa..1e94050 100644
--- a/gerrit-patch-jgit/src/main/java/org/eclipse/jgit/internal/storage/file/WindowCacheStatAccessor.java
+++ b/gerrit-patch-jgit/src/main/java/org/eclipse/jgit/internal/storage/file/WindowCacheStatAccessor.java
@@ -14,8 +14,6 @@
 
 package org.eclipse.jgit.internal.storage.file;
 
-import org.eclipse.jgit.internal.storage.file.WindowCache;
-
 // Hack to obtain visibility to package level methods only.
 // These aren't yet part of the public JGit API.
 

gerrit-server/src/main/java/com/google/gerrit/server/patch/PatchFile.java

diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/patch/PatchFile.java b/gerrit-server/src/main/java/com/google/gerrit/server/patch/PatchFile.java
index 6fcf581..81f4352 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/patch/PatchFile.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/patch/PatchFile.java
@@ -31,7 +31,6 @@
 import org.eclipse.jgit.treewalk.TreeWalk;
 
 import java.io.IOException;
-import java.nio.charset.CharacterCodingException;
 
 /** State supporting processing of a single {@link Patch} instance. */
 public class PatchFile {
@@ -89,7 +88,6 @@
    * @throws CorruptEntityException the patch cannot be read.
    * @throws IOException the patch or complete file content cannot be read.
    * @throws NoSuchEntityException
-   * @throws CharacterCodingException the file is not a known character set.
    */
   public String getLine(final int file, final int line)
       throws CorruptEntityException, IOException, NoSuchEntityException {

gerrit-server/src/test/java/com/google/gerrit/server/ioutil/ColumnFormatterTest.java

diff --git a/gerrit-server/src/test/java/com/google/gerrit/server/ioutil/ColumnFormatterTest.java b/gerrit-server/src/test/java/com/google/gerrit/server/ioutil/ColumnFormatterTest.java
index 2d432e6..3b4005c 100644
--- a/gerrit-server/src/test/java/com/google/gerrit/server/ioutil/ColumnFormatterTest.java
+++ b/gerrit-server/src/test/java/com/google/gerrit/server/ioutil/ColumnFormatterTest.java
@@ -14,8 +14,6 @@
 
 package com.google.gerrit.server.ioutil;
 
-import com.google.gerrit.server.ioutil.ColumnFormatter;
-
 import junit.framework.TestCase;
 
 import java.io.PrintWriter;